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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:641030

Part#: VS-VBM6-6CYLKT

In Stock

$ 27.99 USD

Add to Wish List

Qty

$ 27.99 USD

Add to Wish List

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"

Show More Show Less

Supertech Performance Intake Valve - BMW M50 M52

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:302459

Part#: BMIVN-1030

Ships in 8 Business Days

$ 32.99 USD

Add to Wish List

Qty

$ 32.99 USD

Add to Wish List

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.

Show More Show Less

Supertech Performance Exhaust Valve - BMW M50 M52

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:640219

Part#: BMEVN-1030S

Ships in 8 Business Days

$ 29.99 USD

Add to Wish List

Qty

$ 29.99 USD

Add to Wish List

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.

Show More Show Less

Supertech Single Groove Exhaust Valve - Priced Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21472889

Part#: BMEVI-1055S-HS

Ships in 5 Business Days

$ 55.99 USD

Add to Wish List

Qty

$ 55.99 USD

Add to Wish List

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

Show More Show Less

Supertech Intake Valve - Priced Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:18302506

Part#: MCIVN-1200S

Ships on Aug 5, 2026

$ 30.99 USD

Add to Wish List

Qty

$ 30.99 USD

Add to Wish List

Ferrea Performance Intake Valve - Stock Size

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:583445

Part#: F1550P

Back Ordered

$ 34.99 USD

Add to Wish List

Qty

$ 34.99 USD

Add to Wish List

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:26038568

Part#: SPRKH1000DBMST

In Stock

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

Add to Wish List

Qty

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

Add to Wish List

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.

Show More Show Less

Bav Auto Intermediate Lever Valve Spring Compressor - N20/26 N55 ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:580431

Part#: B8800124

Ships on Aug 10, 2026

Sale - Save 15% $ 178.99

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

$ 152.14 USD

Add to Wish List

Qty

Sale - Save 15%

$ 178.99

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

$ 152.14 USD

Add to Wish List

For installation and removal of pressure springs on intermediate levers of valve train. Ensures quick, easy and safe handling of these high force springs.

5mm Single Groove Valve Keeper - Set Of 24

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21604314

Part#: KPR-5.0-7S-24

In Stock

$ 72.99 USD

Add to Wish List

Qty

$ 72.99 USD

Add to Wish List

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

Ferrea Performance Exhaust Valve - Stock Size

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:583444

Part#: F1552P

In Stock

$ 34.99 USD

Add to Wish List

Qty

$ 34.99 USD

Add to Wish List

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:302460

Part#: SPRK-H1000DBM

Ships in 5 Business Days

$ 787.99 USD

Add to Wish List

Qty

$ 787.99 USD

Add to Wish List

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.

Show More Show Less

Supertech Exhaust Valve - Priced Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:18302505

Part#: MCEVI-1200-HS

Ships in 6 Business Days

$ 67.99 USD

Add to Wish List

Qty

$ 67.99 USD

Add to Wish List

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21604313

Part#: KPR-6S-7-24

In Stock

$ 51.99 USD

Add to Wish List

Qty

$ 51.99 USD

Add to Wish List

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.

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:7403169

Part#: SPRK-2521-2BM-T1

In Stock

$ 1,050.99

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

$ 919.99 USD

Limited Qty Sale

Add to Wish List

Qty

$ 1,050.99

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

$ 919.99 USD

Limited Qty Sale

Add to Wish List

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...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:8549425

Part#: BMIVN-1031S-12

In Stock

$ 384.99

This product was last offered at the strikethrough price on
06-03-2026

$ 347.99 USD

Limited Qty Sale

Add to Wish List

Qty

$ 384.99

This product was last offered at the strikethrough price on
06-03-2026

$ 347.99 USD

Limited Qty Sale

Add to Wish List

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

Show More Show Less

Ferrea High Performance Valve Spring Kit for BMW N55/S55

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:23416526

Part#: FER-HPVSK-N55

Ships in 3 Business Days

$ 1,049.99 USD

Add to Wish List

Qty

$ 1,049.99 USD

Add to Wish List

Maximize your N55 or S55 engine's performance with Ferrea Valve Springs and Retainers, precision components crafted from chromoly alloy. These springs undergo special thermal treatment, ensuring exceptional durability even in extreme racing conditions. Addressing issues like valve binding, breakage, and float, Ferrea valve springs are meticulously heat-treated and stress-relieved, providing stability for high-lift and high-RPM racing engines while minimizing load loss. Precision CNC machined titanium retainers offer superior strength and stability. Ferrea's Spring Seat Locators, made from 4140 chromoly alloy, guarantee precise tolerances and a flat, parallel spring pad with a hard Nitride surface treatment for exceptional toughness and anti-wear characteristics. Please note that installation requires the expertise of an engine builder.

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:640986

Part#: BMEVN-1031S

Ships in 8 Business Days

$ 23.99 USD

Add to Wish List

Qty

$ 23.99 USD

Add to Wish List

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+

Show More Show Less

Performance Valve Springs Kit - Set of 16 Beehive Style

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:18302503

Part#: SPR-MC56BE

In Stock

$ 261.99 USD

Add to Wish List

Qty

$ 261.99 USD

Add to Wish List

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.

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:8549426

Part#: BMEVN-1030-12

In Stock at Vendor

$ 358.99 USD

Add to Wish List

Qty

$ 358.99 USD

Add to Wish List

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

Show More Show Less

BMW M60 / M62 Performance Valve Kit

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:37149881

Part#: MAN-HPVK-M60

Ships in 3 Business Days

$ 1,199.99 USD

Add to Wish List

Qty

$ 1,199.99 USD

Add to Wish List

Turner Motorsport offers the 5150 Auto Sport M60 / M62 Performance Valve Kit, providing BMW owners with a high-quality solution to maximize engine performance and reliability.

BMW M60 / M62 Valve Spring Kit

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:37149877

Part#: 5150-HPVSK-M60

Ships in 3 Business Days

$ 1,399.99 USD

Add to Wish List

Qty

$ 1,399.99 USD

Add to Wish List

M60 Cut Ring Head Gasket Set By Athena-SCE (Bore 90.6 Mm - 0.079") ...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:37149882

Part#: HG-CR-M60-906079

Ships in 3 Business Days

$ 399.99 USD

Add to Wish List

Qty

$ 399.99 USD

Add to Wish List

Turner Motorsport offers the M60 Cut Ring Head Gasket Set By Athena-SCE (Bore 90.6 Mm - 0.079"), providing BMW owners with a premium solution to boost engine reliability and performance.

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:8549424

Part#: KPR-VW6-T-24

In Stock at Vendor

$ 45.99 USD

Add to Wish List

Qty

$ 45.99 USD

Add to Wish List

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

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:9126168

Part#: BMIVN-1030S-12

In Stock at Vendor

$ 384.99 USD

Add to Wish List

Qty

$ 384.99 USD

Add to Wish List

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.

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:9126167

Part#: BMEVI-1030S-12

In Stock at Vendor

$ 562.99 USD

Add to Wish List

Qty

$ 562.99 USD

Add to Wish List

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.

Show More Show Less

Supertech Single Groove Intake Valve - Set Of 12

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:14783498

Part#: BMIVN-1055S-12

Ships in 5 Business Days

$ 310.99 USD

Add to Wish List

Qty

$ 310.99 USD

Add to Wish List

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

Supertech Titanium Valve Retainers - Intake - Set Of 12

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21604322

Part#: RET-BMN54-TI-12

Ships in 6 Business Days

$ 197.99 USD

Add to Wish List

Qty

$ 197.99 USD

Add to Wish List

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

Supertech Titanium Valve Retainers - Exhaust - Set Of 12

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21604321

Part#: RET-BMN54-TE-12

Ships in 7 Business Days

$ 197.99 USD

Add to Wish List

Qty

$ 197.99 USD

Add to Wish List

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

Supertech Single Groove Exhaust Valve - Set Of 12

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:14816646

Part#: BMEVI-1055S-HS-1

Ships in 4 Business Days

$ 660.99 USD

Add to Wish List

Qty

$ 660.99 USD

Add to Wish List

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

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:11760

Part#: TMS11760

Ships in 8 Business Days

$ 1,038.99 USD

Add to Wish List

Qty

$ 1,038.99 USD

Add to Wish List

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

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21604308

Part#: SPRKFE20N54BE

Ships in 4 Business Days

$ 965.99 USD

Add to Wish List

Qty

$ 965.99 USD

Add to Wish List

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

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:11857222

Part#: BMEVN-1031S-12

Ships in 8 Business Days

$ 322.99 USD

Add to Wish List

Qty

$ 322.99 USD

Add to Wish List

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+

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:641032

Part#: VS-VW7-S38KT

Ships in 8 Business Days

$ 177.99 USD

Add to Wish List

Qty

$ 177.99 USD

Add to Wish List

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"

Show More Show Less

Supertech Upgraded Valve Stem Seal Kit - BMW S14 2.3L

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:641031

Part#: VS-VW7-S14KT

Ships in 8 Business Days

$ 33.99 USD

Add to Wish List

Qty

$ 33.99 USD

Add to Wish List

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"

Show More Show Less

Conical Spring Kit - Set Of 24

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21604309

Part#: SPRKFE20N54BE2

Ships on Jul 29, 2026

$ 965.99 USD

Add to Wish List

Qty

$ 965.99 USD

Add to Wish List

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

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:9126166

Part#: PRK-H1000D-BM

Ships on Jul 28, 2026

$ 763.99 USD

Add to Wish List

Qty

$ 763.99 USD

Add to Wish List

Schrick Valve Spring Set - E30 325i M20 engine

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:4791

Part#: 005602022-062

Ships on Oct 28, 2026

$ 917.99 USD

Add to Wish List

Qty

$ 917.99 USD

Add to Wish List

This Schrick valve spring set includes both the inner and outer valve springs for BMW's with the M20 6 cylinder engine. Designed for use with 272-284-288 degree camshafts. It is important to use Schrick Valve springs when installing camshafts with higher lift.

This item fits the following BMWs:
1987-1991 E30 BMW 325i 325ic 325is 325ix
1989-1990 E34 BMW 525i

Show More Show Less

E36 325, 328 M3 Ferrea Titanium Retainer Set

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:31

Part#: E11025-24

Back Ordered

$ 7,199.76 USD

Add to Wish List

Qty

$ 7,199.76 USD

Add to Wish List

E36 325, 328 M3 Ferrea Titanium Retainer Set - set of 24. Recommended to be used with the Ferrea Competition Plus Big Valves. MUST be used with the Ferrea high-performance valve spring and seat kit. See links below.

The goal at Ferrea is to create the finest valves and bearings money can buy. With a staggering array of applications for virtually every production engine in existence both gas and diesel, Ferrea has the parts you need to finish your next engine project with confidence.

This item fits the following BMWs:
1992-1998 E36 BMW 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i

Show More Show Less

E36 325, 328 & M3 Ferrea High Performance Valve Spring Set

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:439

Part#: S10049-24

Back Ordered

$ 817.20 USD

Add to Wish List

Qty

$ 817.20 USD

Add to Wish List

Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicone steel These springs are manufactured with state-of-the-art equipment. Ferrea springs are heat-treated and stress-relieved, which dramatically increases the spring's life. Strict quality control procedures and cycle testing ensures consistency from batch to batch. Ferrea valve springs provide the stability needed for high lift, high rpm racing and street car engines. Kit includes a set of 24 springs. MUST be used with the Ferrea Spring Seat and Titanium Retainers. See links below.

https://www.turnermotorsport.com/e/p-163-e36-325-328-m3-ferrea-spring-seat-set/

https://www.turnermotorsport.com/e/p-31-e36-325-328-m3-ferrea-titanium-retainer-set/

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i

Show More Show Less

E36 325, 328 M3 Ferrea Spring Seat Set

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:163

Part#: SL1021-24

Back Ordered

$ 118.80 USD

Add to Wish List

Qty

$ 118.80 USD

Add to Wish List

E36 325, 328 M3 Ferrea Spring Seat Set includes 24 seats. MUST be uses with the Ferrea valve springs. Recommended to be used with the Ferrea Competition Plus Big Valves and Ferrea Titanium Retainers. See links below.

The goal at Ferrea is to create the finest valves and bearings money can buy. With a staggering array of applications for virtually every production engine in existence both gas and diesel Ferrea has the parts you need to finish your next engine project with confidence.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1991-1995 E34 BMW 525i

Show More Show Less

Intake Valve - Black Nitride

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21505752

Part#: BMIVN-1054S

In Stock

$ 25.99

This product was last offered at the strikethrough price on
06-08-2026

$ 23.99 USD

Limited Qty Sale

Add to Wish List

Qty

$ 25.99

This product was last offered at the strikethrough price on
06-08-2026

$ 23.99 USD

Limited Qty Sale

Add to Wish List

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

Cat Cams Competition Valve Spring - Priced Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:8014956

Part#: PAC-I92009

In Stock

$ 11.99 USD

Add to Wish List

Qty

$ 11.99 USD

Add to Wish List

Single Groove Valve Keeper 6mm - Priced Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

Add to Wish List

Qty

$ 2.99 USD

Add to Wish List

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

Intake Valve - Black Nitride - Oversize

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21505753

Part#: BMIVN-1054S-1

In Stock

$ 25.99 USD

Add to Wish List

Qty

$ 25.99 USD

Add to Wish List

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

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:31191899

Part#: MCEVI-1400S-HS

In Stock

$ 56.99

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

$ 51.99 USD

Limited Qty Sale

Add to Wish List

Qty

$ 56.99

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

$ 51.99 USD

Limited Qty Sale

Add to Wish List

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.

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:641010

Part#: VS-VBM6E

In Stock

$ 1.99 USD

Add to Wish List

Qty

$ 1.99 USD

Add to Wish List

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"

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:641011

Part#: VS-VBM6I

In Stock

$ 1.99 USD

Add to Wish List

Qty

$ 1.99 USD

Add to Wish List

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"

Show More Show Less

Performance Conical Valve Spring - Sold Each

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

Limited Qty Sale

Add to Wish List

Qty

$ 19.99

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

$ 18.99 USD

Limited Qty Sale

Add to Wish List

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

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with a production date from 09/1992+

T#:641029

Part#: VS-VBM6-M42KT

In Stock

$ 18.99 USD

Add to Wish List

Qty

$ 18.99 USD

Add to Wish List

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"

Show More Show Less

Exhaust Valve Set - Sodium Filled - Oversize

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:21505765

Part#: BMEVI1054SHS-1KT

In Stock

$ 660.99 USD

Add to Wish List

Qty

$ 660.99 USD

Add to Wish List

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

Project Cars

SELECT YOUR BMW

Intake & Exhaust Valves

Sub-Categories

Performance Valve Spring Kit

Key Features:

Select Vehicle

Purpose

Category

Brand

Price

Special Offers

Shipping

Narrow Results