Supertech Upgraded Valve Stem Seal Kit - BMW S54 S52 S50 M54 M52 M50 ...

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T#:641030

Part#: VS-VBM6-6CYLKT

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$ 27.99 USD

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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Supertech Performance Intake Valve - BMW M50 M52

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T#:302459

Part#: BMIVN-1030

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$ 32.99 USD

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Supertech valves are some of the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. These valves are hardened black nitrided, which is most popular in European and Japanese motors.

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Supertech Performance Exhaust Valve - BMW M50 M52

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T#:640219

Part#: BMEVN-1030S

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$ 29.99 USD

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Supertech valves are some of the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. These valves are hardened black nitrided, which is most popular in European and Japanese motors.

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Supertech Single Groove Exhaust Valve - Priced Each

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T#:21472889

Part#: BMEVI-1055S-HS

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$ 55.99 USD

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Single Groove sodium filled exhaust valves for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm

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Supertech Intake Valve - Priced Each

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T#:18302506

Part#: MCIVN-1200S

Ships on Jul 28, 2026

$ 30.99 USD

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SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 80lbs - ...

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T#:26038568

Part#: SPRKH1000DBMST

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20% off MSRP $ 1,042.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 833.99 USD

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$ 1,042.99

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$ 833.99 USD

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Crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, these valve springs offer exceptional performance and durability even at high RPMs. CAD engineering ensures that the wire stress levels remain within defined limits for long-lasting durability, even under extreme racing conditions. Advanced computer software allows Supertech to meticulously control harmonics, ensuring optimal performance. Manufactured with high-quality military-certified Steel, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.

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5mm Single Groove Valve Keeper - Set Of 24

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T#:21604314

Part#: KPR-5.0-7S-24

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Two required per valve, for use with certain supertech valves 5.0mm single groove

Supertech High Performance Valve Spring Set - E36 M3, 325i, 328i - Ti...

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T#:302460

Part#: SPRK-H1000DBM

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$ 787.99 USD

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Supertech Spring / Retainer kits are precision matched sets for a complete valvetrain overhaul. Developed for the performance enthusiast that wants the best the industry has to offer, Supertech Spring / Retainer kits are second to none in terms of performance, quality and value.

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Supertech Exhaust Valve - Priced Each

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T#:18302505

Part#: MCEVI-1200-HS

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$ 67.99 USD

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BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper - Set Of 24 ...

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T#:21604313

Part#: KPR-6S-7-24

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$ 51.99 USD

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BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper is a precision-engineered component essential for securing valves in BMW engines. Turner Motorsport offers this high-quality valve keeper, designed to fit specific Supertech valves for enhanced performance and reliability.

Precision Fit: Designed specifically for BMW M42, M50, M52, and M54 engines, ensuring a perfect fit with 6.0mm single groove valves.
High-Quality Construction: Made from durable materials to withstand high-pressure conditions and provide long-lasting performance.
Enhanced Valve Security: Two keepers are required per valve to securely hold the valve in place, preventing movement and ensuring consistent engine performance.
Compatibility: Ideal for use with certain Supertech valves, providing a reliable solution for engine builds and upgrades.
Easy Installation: Simple to install with standard tools, offering a hassle-free upgrade or replacement option.

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Supertech BMW S54 Dual VALVE Spring Kit - E46 M3 Z3M Z4M

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T#:7403169

Part#: SPRK-2521-2BM-T1

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$ 1,050.99

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05-03-2026

$ 919.99 USD

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Dual valve spring kit to be used with triple groove valves and OEM locks.

Supertech Black Nitrided Intake Valve - +1mm Oversize - Set Of 12 - B...

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T#:8549425

Part#: BMIVN-1031S-12

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$ 384.99

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$ 347.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our intake valves are made exclusively from an enhanced versions of EV8 (21-4N) steel. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Black Nitride Coating Head Diam: 33mm Material: Stainless Steel 21-4N Groove Type: Triple Groove Length: 123.7mm Stem Diam: 6.95mm

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SuperTech Black Nitrided Exhaust Valve - +1mm Oversize - Single Valv...

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T#:640986

Part#: BMEVN-1031S

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$ 23.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Head Diam: 31.50mm Material: Black Nitride Groove Type: Single Groove Length: 105.65mm Stem Diam: 5.95mm Size: 1mm+

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Performance Valve Springs Kit - Set of 16 Beehive Style

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T#:18302503

Part#: SPR-MC56BE

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$ 261.99 USD

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Performance Valve Spring Kit

This valve spring kit, designed for performance built engines, is a critical component for those demanding peak performance from their vehicles. The kit includes a set of 16 springs that mount to the stock OEM retainers.

Key Features:

Valve Spring Type: Beehive Spring
Outer Spring Outer Diameter: 23.30mm
Outer Spring Inner Diameter: 16.80mm
Inner Spring Outer Diameter: 18.80mm
Inner Spring Inner Diameter: 12.30mm
Pressure Seat: 65 @ 33.6mm
Pressure Open: 163 @ 10
Maximum Lift: 11.40mm
Coil Bind: 22.20mm
Spring Rate: 9.80mm
Retainer: OEM Retainer + OEM Seat

Upgrade your engine's performance with this high-quality valve spring kit, ensuring optimum power and reliability.

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Supertech Black Nitrided Exhaust Valve - Set Of 12 - BMW M50/M52/S50/...

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T#:8549426

Part#: BMEVN-1030-12

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$ 358.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Black Nitride Coating Head Diam: 30.50mm Material: Black Nitride Groove Type: Triple Groove Length: 105.65mm Stem Diam: 5.95mm Size: Std

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Supertech Triple Groove Valve Locks - Set Of 24 - BMW M50 2.5L, S50 3...

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T#:8549424

Part#: KPR-VW6-T-24

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$ 45.99 USD

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Upgraded valve locks from Supertech - features a triple groove for compatible intake and exhaust valves.

Supertech BMW M50/M52/S50/S52 Inconel Exhaust Valve - Set Of 12 ...

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T#:9126167

Part#: BMEVI-1030S-12

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$ 562.99 USD

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The exhaust valves in your vehicle allow the exhaust port to be sealed during the combustion process, so that the engine can run at top efficiency. If the timing belt or lifter breaks, this can cause the piston to come in contact with the valve and bend or break it, causing an improper seal. This will cause a rough idle, misfires, and a check engine light condition. Be sure to replace your bent or broken valve today and keep your engine running strong.

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Supertech BMW M50/M52/S50/S52 Black Nitrided Intake Valve - Set Of 12...

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T#:9126168

Part#: BMIVN-1030S-12

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$ 384.99 USD

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Generally, an intake valve is the name for a valve that allows air or fluid to pass through it, typically during the intake phase of an engine's operation. In your car, the intake valves allow an air and fuel mixture into the engine's cylinders where it can then be compressed. The valves shut during the compression phase and the spark plug ignites the air and fuel mixture, creating a force that propels the car forward. If these valves aren’t working properly, the engine will create less power and it can damage the engine over time.

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Supertech Titanium Valve Retainers - Intake - Set Of 12

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T#:21604322

Part#: RET-BMN54-TI-12

Ships in 7 Business Days

$ 197.99 USD

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7 Degree - 5mm valve stem - Single or Tripe Groove Valves

Supertech Single Groove Intake Valve - Set Of 12

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T#:14783498

Part#: BMIVN-1055S-12

Ships in 6 Business Days

$ 310.99 USD

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Head Diam: 32mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 104.9mm Stem Diam: 4.97mm

Supertech Titanium Valve Retainers - Exhaust - Set Of 12

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T#:21604321

Part#: RET-BMN54-TE-12

Ships in 8 Business Days

$ 197.99 USD

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7 Degree - 6mm valve stem - Single or Tripe Groove Valves

Supertech High Performance Valve Spring Set - E46 M3, MZ3 (S54), MZ4 ...

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T#:11760

Part#: TMS11760

Ships in 9 Business Days

$ 1,038.99 USD

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$ 1,038.99 USD

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For BMW's with S54 engines, these valve springs are made with premium Superclean Chrome Silicon Vanadium Steel alloy for high performance and durability at high rpms, with better memory. These are extremely high quality, offered at the best price.

Computer designed to ensure that the wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme racing conditions. Computer software allows Supertech to make sure that the harmonics are well under control.

The retainers are manufactured with high quality military certified Titanium alloy, CNC machined for a tight fit that will ensure a long durability.

This item fits the following BMWs:
2001-2006 E46 BMW M3
2001-2002 Z3 BMW M Roadster M Coupe
2006-2008 E85 BMW Z4 M Roadster M Coupe

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SuperTech Black Nitrided Exhaust Valve - +1mm Oversize - Set Of 12 -...

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T#:11857222

Part#: BMEVN-1031S-12

Ships in 9 Business Days

$ 322.99 USD

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$ 322.99 USD

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Upgraded valves designed for high horsepower applications! Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs. With every valve design, we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc. It’s unlikely you will find any of our competitor’s valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you won’t find a better sealing, better performing and easier to install solution anywhere! Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application. In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result… unsurpassed performance and durability. Our exhaust valves are made from EV16 (21-8N) or EV8-Nb/w for greater strength at higher temperatures. Black Nitride Coating: This is a hardening treatment that has been steadily growing in popularity over the last several years. These black Nitride coated valves feature harder surfaces and smoother finishes, providing less friction and subsequently longer life. Please see below for more benefits of our Black Nitride valves. Head Diam: 31.50mm Material: Black Nitride Groove Type: Single Groove Length: 105.65mm Stem Diam: 5.95mm Size: 1mm+

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Supertech Single Groove Exhaust Valve - Set Of 12

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T#:14816646

Part#: BMEVI-1055S-HS-1

Ships in 5 Business Days

$ 660.99 USD

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Single Groove sodium filled exhaust valve set for high performance builds Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 112.9mm Stem Diam: 5.96mm

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Performance Dual Valve Spring Kit with Steel Retainers - Set Of 24 ...

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T#:21604308

Part#: SPRKFE20N54BE

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$ 965.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Can be used with factory valve stem seals and keepers. InnSpr.OD: 21mm InnSpr.ID: 14.2mm Seat Pressure: 75 @ 36.5 Open Pressure: 155 @ 10 Max Lift: 12mm Coil Bind: 23.2mm Rate: 8 Kit spring: SPR-FE20BE Kit spring qty: 24 Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm) OutSpr.OD: 24.4mm OutSpr.ID: 17.6mm Retainer qty: 24

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Supertech Upgraded Valve Stem Seal Kit - BMW S38 3.5L 3.6L

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T#:641032

Part#: VS-VW7-S38KT

Ships in 9 Business Days

$ 177.99 USD

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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"

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Supertech Upgraded Valve Stem Seal Kit - BMW S14 2.3L

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T#:641031

Part#: VS-VW7-S14KT

Ships in 9 Business Days

$ 33.99 USD

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$ 33.99 USD

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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"

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Conical Spring Kit - Set Of 24

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T#:21604309

Part#: SPRKFE20N54BE2

Ships on Jul 21, 2026

$ 965.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Can be used with factory valve stem seals and keepers. InnSpr.OD: 21mm InnSpr.ID: 14.2mm Seat Pressure: 88 @ 36.5 Open Pressure: 160 @ 10 Max Lift: 12mm Coil Bind: 23.2mm Rate: 7.25 Kit spring: SPR-FE20BE-2 Kit spring qty: 24 Retainer: RET-BMN54-TI (5mm) / RET-BMN54-TE (6mm) OutSpr.OD: 24.4mm OutSpr.ID: 17.6mm Retainer qty: 24

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Supertech BMW M50/M52/S50/S52 Dual Valve Spring Kit

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T#:9126166

Part#: PRK-H1000D-BM

Ships on Jul 20, 2026

$ 763.99 USD

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Supertech 6mm Exhaust Valve Stem Seal - Viton - BMW S54 S52 S50 M54 M...

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T#:641010

Part#: VS-VBM6E

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$ 1.99 USD

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$ 1.99 USD

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Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Single Groove Valve Keeper 6mm - Priced Each

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T#:3268708

Part#: KPR-6S-7

In Stock

$ 5.99

This product was last offered at the strikethrough price on
03-04-2026

$ 2.99 USD

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$ 2.99 USD

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Two required per valve, for use with certain supertech valves 6.0mm single groove

MINI F54 to F60 Supertech Exhaust Valve - Priced Each 28.5mm Standar...

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T#:31191899

Part#: MCEVI-1400S-HS

In Stock

$ 56.99

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$ 51.99 USD

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MINI F54 to F60 Supertech Exhaust Valve - Priced Each 28.5mm Standard Size offers a high-performance upgrade for MINI models. This exhaust valve is designed for enhanced durability and efficiency, featuring a standard head diameter of 28.5mm and a length of 100.10mm. It is constructed from black nitride material and filled with sodium to withstand high temperatures and extreme conditions.

High Durability: Made from black nitride and sodium-filled for improved resistance to heat and wear.
Precision Engineering: Standard head diameter of 28.5mm ensures a perfect fit and function.
Enhanced Performance: Designed to withstand high temperatures and provide reliable exhaust flow.
Compatibility: Uses factory retainers and springs for easy installation.
Quality Construction: Inconel material and single groove design enhance the valve’s longevity and performance.

This exhaust valve is ideal for those seeking to optimize engine performance and durability.

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Exhaust Valve - Sodium Filled - Oversize

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T#:21505757

Part#: BMEVI-1054S-HS-1

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$ 55.99

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$ 50.99 USD

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Head Diam: 28.50m (+0.5mm) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 114.9mm Stem Diam: 5.95mm

Intake Valve - Black Nitride

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T#:21505752

Part#: BMIVN-1054S

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$ 25.99

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$ 23.99 USD

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Head Diam: 31.40mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 106.7mm Stem Diam: 4.96mm

Supertech Upgraded Valve Stem Seal Kit - BMW E36 M42 1.8L (09/1992+) ...

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For vehicles with a production date from 09/1992+

T#:641029

Part#: VS-VBM6-M42KT

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$ 18.99 USD

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$ 18.99 USD

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Includes a full set of polyacrylic intake and viton exhaust valve stem seals! Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Supertech 6mm Intake Valve Stem Seal - Polyacrylic - BMW S54 S52 S50 ...

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T#:641011

Part#: VS-VBM6I

In Stock

$ 1.99 USD

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$ 1.99 USD

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Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 8.8mm/.347" Seal OD: 12.2mm/.480"

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Exhaust Valve - Sodium Filled - Std Size

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T#:21505756

Part#: BMEVI-1054S-HS

In Stock

$ 55.99

This product was last offered at the strikethrough price on
05-03-2026

$ 50.99 USD

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$ 55.99

This product was last offered at the strikethrough price on
05-03-2026

$ 50.99 USD

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Head Diam: 28mm (std) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 114.9mm Stem Diam: 5.95mm

Intake Valve - Black Nitride - Oversize

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T#:21505753

Part#: BMIVN-1054S-1

In Stock

$ 25.99 USD

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$ 25.99 USD

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Head Diam: 31.9mm (+0.5mm) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 106.7mm Stem Diam: 4.96mm

Exhaust Valve Set - Sodium Filled - Oversize

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T#:21505765

Part#: BMEVI1054SHS-1KT

In Stock

$ 660.99 USD

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$ 660.99 USD

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Head Diam: 28.50m (+0.5mm) Material: Inconel-Nimonic / Sodium Filled Groove Type: Single Groove Length: 114.9mm Stem Diam: 5.95mm

Performance Conical Valve Spring - Sold Each

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T#:21472894

Part#: SPR-FE20BE

In Stock

$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 18.99 USD

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$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 18.99 USD

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Supertech has the high performance valvetrain components you need to take your build to the next level. Seat Pressure: 75 @ 37 Open Pressure: 155 @ 10 Max Lift: 12.2mm Coil Bind: 23.20mm Rate: 8 OutSpr.ID: 17.60mm InnSpr.OD: 21.00mm InnSpr.ID: 14.20mm

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SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 67lbs - ...

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T#:51426477

Part#: SPRKH100DRBMST

In Stock at Vendor

$ 833.99 USD

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$ 833.99 USD

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Crafted from premium Superclean Chrome Silicon Vanadium Steel alloy, these valve springs offer exceptional performance and durability even at high RPMs. CAD engineering ensures that the wire stress levels remain within defined limits for long-lasting durability, even under extreme racing conditions. Advanced computer software allows Supertech to meticulously control harmonics, ensuring optimal performance. Manufactured with high-quality military-certified Steel, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.

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Supertech 7mm Intake Valve Stem Seal - Polyacrylic - BMW S14 S38 ...

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T#:641013

Part#: VS-VW7I

Ships in 5 Business Days

$ 0.99 USD

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$ 0.99 USD

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Looking to replace your valve stem seals due to leaks, cracks, splits, or even during an upgrade of your camshafts, valve springs, or valves? Supertech valve stem seals are the way to go! This cheap but effective seal replaces the stock BMW seals that are notoriously prone to issues due to heat cycles and chemicals which cause the seals to become weak and brittle. Supertech seals offer a significantly longer life span and are resistant to both heat and chemicals thanks to their use of Viton or Polyacrylic construction (dependant on valve type). That means less time in the garage and more time on the street or track! These seals are also great for anyone who is looking to upgrade to dual valve springs thanks to the seal's overall thinner outer diameter! Guide OD: 9.8mm/.385" Seal OD: 13.2mm/.520"

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Supertech Exhaust Valve - Priced Each

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T#:26404919

Part#: MCEVI-1202-HS

Ships in 6 Business Days

$ 69.99 USD

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$ 69.99 USD

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Enhance your Mini's engine performance with these high-quality intake valves. Made of durable Black Nitride material, these valves feature a single groove design for improved airflow. With a head diameter of 27.00mm (+0.08) and a length of 110.15mm, they are designed to optimize engine efficiency and power output.

Durable Black Nitride material ensures longevity
Single groove design improves airflow
Precision-engineered for optimal performance
Compatible with Mini engines for seamless installation

Upgrade your Mini's engine with these intake valves and experience improved performance on the road.

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VW-Audi 7mm Exhaust Valve stem seal / Viton (SET OF 6)

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T#:35795475

Part#: VS-VW7E-6

Ships in 6 Business Days

$ 7.99 USD

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$ 7.99 USD

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Intake Valve Set - Black Nitride - Std Size

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T#:21505754

Part#: BMIVN-1054SKT

Ships in 6 Business Days

$ 310.99 USD

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$ 310.99 USD

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Head Diam: 31.40mm (std) Material: Stainless Steel 21-4N Groove Type: Single Groove Length: 106.7mm Stem Diam: 4.96mm

Valve Stem Seal Intake Side - Set Of 8 - BMW MINI B38 B46/48 ...

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T#:14783496

Part#: VSI-BM50-IKT

Ships in 7 Business Days

$ 91.99

This product was last offered at the strikethrough price on
01-14-2026

$ 14.99 USD

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$ 14.99 USD

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Supertech Valve Seals are the final piece of the puzzle for your performance valvetrain. This is for a complete valve stem seal repair for the Intake side, you will need 8 of a different part for the exhaust side.

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Supertech Intake Valve - Priced Each 29.80mm(+1.0mm)

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T#:31522974

Part#: MCIVN-1201S

Ships in 9 Business Days

$ 34.99 USD

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$ 34.99 USD

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Supertech Titanium Valve Retainers - Intake - Sold Each

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T#:21604319

Part#: RET-BMN54-TI

Ships in 9 Business Days

$ 16.99 USD

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$ 16.99 USD

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7 Degree - 5mm valve stem - Single or Tripe Groove Valves

Valve keeper for Audi/BMW/Opel 6mm stem Triple groove - Supertech ...

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T#:26704985

Part#: KPR-VW6-T

Ships in 9 Business Days

$ 1.99 USD

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$ 1.99 USD

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MINI F54 to F60 Performance Valve Springs Kit - Set Of 16

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T#:31158807

Part#: SPRK-MCB48

Ships in 9 Business Days

$ 721.99 USD

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$ 721.99 USD

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MINI F54 to F60 Performance Valve Springs Kit - Set Of 16

The MINI F54 to F60 Performance Valve Springs Kit - Set Of 16 is designed to enhance performance for engines that demand higher specifications. This kit mounts directly to the stock OEM retainers, making it a seamless upgrade for those seeking improved engine performance.

Set of 16 springs: Complete kit for comprehensive engine upgrade.
Improved performance: Designed for high-performance engines.
Direct fit: Mounts to OEM retainers, ensuring easy installation.
Specifications:
- Outer Spring Diameter: 24.40mm
- Inner Spring Diameter: 21.00mm
- Outer Spring ID: 17.60mm
- Inner Spring ID: 14.20mm
- Pressure Seat: 75 @ 37mm
- Pressure Open: 155 @ 10mm
- Maximum Lift: 12.2mm
- Coil Bind: 23.20mm
- Rate: 8.0mm
- OEM Retainer and Seat Compatible
- Retainer Part Numbers: SPR-FE20BE(16) + RET-BMB48/TE(8) + RET-BMB48/TI(8)

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