Supertech for BMW 5 Series E39 (1996-2003)

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

T#:641030

Part#: VS-VBM6-6CYLKT

In Stock

$ 24.99 USD

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$ 24.99 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 Exhaust Valve - BMW M50 M52

T#:640219

Part#: BMEVN-1030S

Ships Jul 10, 2025

$ 29.99 USD

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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 Performance Intake Valve - BMW M50 M52

T#:302459

Part#: BMIVN-1030

Ships Jul 10, 2025

$ 32.99 USD

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

T#:21604313

Part#: KPR-6S-7-24

In Stock

$ 51.99 USD

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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 Dual Valve Spring Upgrade Kit - BMW M42 M5X - Steel Retaine...

T#:26038568

Part#: SPRKH1000DBMST

In Stock

$ 779.99 USD

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$ 779.99 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 Titanium alloy, the retainers are CNC machined to provide a precise fit, guaranteeing longevity and reliability.

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

T#:8549426

Part#: BMEVN-1030-12

In Stock

$ 358.99 USD

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

T#:9126168

Part#: BMIVN-1030S-12

In Stock

$ 384.99 USD

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

T#:640986

Part#: BMEVN-1031S

Ships Jul 10, 2025

$ 23.99 USD

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

T#:11857222

Part#: BMEVN-1031S-12

In Stock

$ 287.99

$ 263.99 USD

Limited Qty Sale

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$ 287.99

$ 263.99 USD

Limited Qty Sale

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

T#:8549425

Part#: BMIVN-1031S-12

In Stock

$ 384.99 USD

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Qty

$ 384.99 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 BMW M50/M52/S50/S52 Inconel Exhaust Valve - Set Of 12 ...

T#:9126167

Part#: BMEVI-1030S-12

In Stock

$ 562.99 USD

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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 Dual Valve Spring Kit

T#:9126166

Part#: PRK-H1000D-BM

Ships Jul 15, 2025

$ 763.99 USD

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$ 763.99 USD

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

T#:641011

Part#: VS-VBM6I

In Stock

$ 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: 8.8mm/.347" Seal OD: 12.2mm/.480"

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

T#:26704985

Part#: KPR-VW6-T

In Stock

$ 1.99

$ 1.99 USD

Limited Qty Sale

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$ 1.99

$ 1.99 USD

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

T#:641010

Part#: VS-VBM6E

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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Single Groove Valve Keeper 6mm - Priced Each

T#:3268708

Part#: KPR-6S-7

In Stock

$ 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

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Supertech for BMW 5 Series E39 (1996-2003)

Sub-Categories

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

Supertech Performance Exhaust Valve - BMW M50 M52

Supertech Performance Intake Valve - BMW M50 M52

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

SuperTech Dual Valve Spring Upgrade Kit - BMW M42 M5X - Steel Retaine...

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

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

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

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

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

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

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

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

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

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

Single Groove Valve Keeper 6mm - Priced Each

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