Supertech Unclassified

BMW M3 S54/ Exhaust valve 30.5x5.95x126.10mm/ SS/Blk. Nitrided/Stk.si...

T#:641911

Part#: BMEVN-1040

Ships in 5 Business Days

$ 29.99 USD

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$ 29.99 USD

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BMW M3 S54 Intake valve 35x5.97x117.50mm/ SS/Blk. Nitrided/Stk.size ...

T#:641912

Part#: BMIVN-1040

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$ 32.99 USD

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$ 32.99 USD

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BMW M50/52 Single Groove Intake valve 33x5.97x106.10mm/ SS/Blk. Nitri...

T#:3428565

Part#: BMIVN-1030S

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$ 32.99 USD

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$ 32.99 USD

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84.00mm Piston Ring Set - Single Piston - 1x3.10/1.2x3.50/2.8x3.10mm,...

T#:44021159

Part#: R84-GNH8400

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$ 28.99 USD

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$ 28.99 USD

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BMW S54 Forged Connecting Rod/ 4340 alloy/ H beam/ ARP 3/8" - 2000 bo...

T#:36337145

Part#: CR-BMS54-H139

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$ 194.99 USD

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$ 194.99 USD

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BWM S63 V8 Conical spring kit - 83lbs @35.7mm (Ex) 80@ 36mm (in) - 16...

T#:51110151

Part#: SPRK-BMS63B

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$ 1,522.99 USD

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$ 1,522.99 USD

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Valve Stem Seals "Viton Seals" - Priced Each

T#:50934290

Part#: VSI-M6E

In Stock

$ 2.99

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

$ 1.99 USD

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$ 2.99

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

$ 1.99 USD

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87.50mm Piston Ring Set - Single Piston - 1x3.30/1.2x3.60/2.8x3.10mm ...

T#:44021158

Part#: R87.5-GNH8750

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$ 28.99

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

$ 25.99 USD

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$ 28.99

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

$ 25.99 USD

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Titanium Retainers - Set Of 8 - BMW B48

T#:49023066

Part#: RET-BMB48-TE-8

In Stock

$ 172.99

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

$ 157.99 USD

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$ 172.99

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

$ 157.99 USD

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Supertech BMW S52 Steel Spring Retainer - Set Of 24

T#:20056517

Part#: RET-HBK-ST-24

Ships in 1 Business Day

7% off MSRP $ 281.99

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

$ 261.99 USD

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7% off MSRP

$ 281.99

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

$ 261.99 USD

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Rev higher and drive faster with this performance steel spring set.

Valve Stem Seal - Priced Each - Upgraded Viton Seals

T#:29931716

Part#: VSI-MIN-R56

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$ 2.99 USD

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$ 2.99 USD

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Valve Stem Seals "Viton Seals" - Set of 8

T#:50934530

Part#: VSI-M6E-8

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$ 16.99 USD

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$ 16.99 USD

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Supertech BMW B58 82mm Bore 36cc 11:1 CR Pistons - Set Of 6 (Excl Rin...

T#:53820942

Part#: P4-MINB48-82-CR1

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$ 1,106.99 USD

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$ 1,106.99 USD

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Valve Stem Seal Exhaust Side - Viton Seals - Set Of 8

T#:50934389

Part#: VSI-BM60-EKT

Ships in 6 Business Days

$ 16.99 USD

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$ 16.99 USD

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Supertech 7mm Exhaust Valve Stem Seal - Viton - BMW S14 S38

T#:641012

Part#: VS-VW7E

Ships in 5 Business Days

$ 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: 9.8mm/.385" Seal OD: 13.2mm/.520"

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Valve Stem Seal Exhaust Side - Priced Each

T#:9222684

Part#: VSI-BM60-E

Ships in 6 Business Days

$ 2.99 USD

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$ 2.99 USD

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Valve Stem Seals "Viton Seals" - Priced Each - Set Of 16

T#:50934587

Part#: VSI-M6EKT

Ships in 5 Business Days

$ 32.99 USD

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$ 32.99 USD

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Valve Stem Seal Intake Side - Priced Each

T#:9222685

Part#: VSI-BM50-I

Ships in 6 Business Days

$ 1.99 USD

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$ 1.99 USD

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Exhaust Valve - Priced Each - head 25.20(+2.3mm)

T#:54388381

Part#: MCEVN-1010FS

Ships in 8 Business Days

$ 28.99 USD

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$ 28.99 USD

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Factory valves can stretch, cup, or drop a head entirely under extreme stress. Supertech’s advanced metallurgy and precision engineering provide the peace of mind required to turn up the boost, stretch the powerband, and dominate the track.

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