Valve Springs for BMW Z Series E85/6 (2003-2008)

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SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 80lbs - BMW M50 M52 M54 S52
SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 80lbs - ...
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Supertech - Corporate Logo
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
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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
Free Shipping on orders $49 and up
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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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BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper - Set Of 24
BMW M42 M50 M52 M54 6mm Single Groove Valve Keeper - Set Of 24 ...
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Supertech - Corporate Logo
T#:21604313
Part#: KPR-6S-7-24
Ships in 6 Business Days
$ 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 BMW S54 Dual VALVE Spring Kit - E46 M3 Z3M Z4M
Supertech BMW S54 Dual VALVE Spring Kit - E46 M3 Z3M Z4M
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Supertech - Corporate Logo
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
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$ 1,050.99

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

$ 919.99 USD
Limited Qty Sale
Free Shipping
Add to Wish List
Dual valve spring kit to be used with triple groove valves and OEM locks.
Supertech High Performance Valve Spring Set - E46 M3, MZ3 (S54), MZ4
Supertech High Performance Valve Spring Set - E46 M3, MZ3 (S54), MZ4 ...
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Supertech - Corporate Logo
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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Single Groove Valve Keeper 6mm - Priced Each
Single Groove Valve Keeper 6mm - Priced Each
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Supertech - Corporate Logo
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
Valve Keeper - M50, M52, S50US, S52, M52TU, M54, N52, N54, N62, S54, S62, S63
Valve Keeper - M50, M52, S50US, S52, M52TU, M54, N52, N54, N62, S54, ...
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Genuine BMW - Corporate Logo
T#:14519
Part#: 11341461405
In Stock
$ 3.97 USD
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$ 3.97 USD
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This is the OE BMW valve keeper (collet) used to hold the valve spring and seats in place on the valve stem. If you're doing any valve work on the engine these are an absolute must!

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.

Price is per keeper and each valve requires two.

This item fits the following BMWs:
2008-2012 E82 BMW 128i 135i 1M Coupe
1992-1999 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2001-2002 E46 BMW M3
2006-2010 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi 335d 335i 335xi 335i xDrive - Sedan
2006-2010 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2010 E92 BMW 328i 328xi 328i xDrive 335i 335is 335xi 335i xDrive - Coupe
2007-2010 E93 BMW 328i 335i - Convertible
1991-1995 E34 BMW 525i
1997-2003 E39 BMW 525i 528i 530i M5
2004-2010 E60 BMW 525i 525xi 530i 530xi 528i 528xi 528i xDrive 535i 535xi 535i xDrive 545i 550i
2004-2011 E63 BMW 645ci 650i
2002-2008 E65 BMW 745i 745li 750i 750li
2004-2010 E83 BMW X3 2.5i X3 3.0i X3 3.0si
2000-2006 E53 BMW X5 3.0i
2004-2006 E53 BMW X5 4.4i X5 4.8is
2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive35i X5 xDrive48i
2009+ E70 BMW X5M
2008+ E71 BMW X6 xDrive35i X6 xDrive50i
2009+ E71 BMW X6M
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i M Roadster M Coupe
2003-2008 E85 BMW Z4 2.5i Z4 3.0i Z4 3.0si
2000-2003 E52 BMW Z8 Roadster
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SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 67lbs - BMW M50 M52 M54 S52
SuperTech Dual Valve Spring Upgrade Kit w/ Steel Retainers - 67lbs - ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Supertech - Corporate Logo
T#:51426477
Part#: SPRKH100DRBMST
In Stock at Vendor
New Item
$ 833.99 USD
Add to Wish List
$ 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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Genuine BMW Valve Spring Set - E46 Z3 Z4
Genuine BMW Valve Spring Set - E46 Z3 Z4
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Genuine BMW - Corporate Logo
T#:34101
Part#: 11317830890
Ships in 3 Business Days
$ 16.49

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

$ 16.47 USD
Free Shipping on orders $49 and up
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$ 16.47 USD
Free Shipping on orders $49 and up
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Genuine BMW Set Valve Spring Yellow/Yellow
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4

Fits BMW Engines including:
S54

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