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Valve Lifters

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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

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$ 763.99 USD

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Schrick Solid Lifter Conversion Kit (convert Hydraulic Lifters To Sol...

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

T#:359938

Part#: 086311700KT

Ships on Oct 28, 2026

$ 833.52 USD

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$ 833.52 USD

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One major hurdle for a track-only car is the limitation of the hydraulic valve lifters in the M50, S50-US, M52, S52-US, M52TU, and M54 engines. These effectively limit your revs to 7200-7300 RPM as the valves 'float' at higher revs, leading to piston-valve contact. By converting to a machined solid lifter, and upgrading other areas of the engine, you can configure the valve train to withstand high RPM running. Not only can you tune for more power, you can help prevent damage during a mild mechanical over-rev.

This kit includes the mechanical spacers to convert hydraulic lifter tappets to solid lifters. The lifter bucket remains in place with the Schrick solid tappet replacing the original. These work on all M50, M52, S50, S52 and M54 engines and were proven in normally aspirated as well as supercharged engines. A custom camshaft is required.

Professional installation and setup is mandatory as these require complete assembly of the head, checking valve lash, then dis-assembly and machining of the Schrick tappet to spec. This kit includes enough spacers for 24 valves. We also carry individual parts, if you are looking for single pieces. This price is for a full set of 24.

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Titanium Retainer - Priced Each

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

T#:26171670

Part#: RET-MC56/T1

In Stock

$ 19.99

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

$ 17.99 USD

Limited Qty Sale

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$ 19.99

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

$ 17.99 USD

Limited Qty Sale

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Titanium Performance Retainers for MINI

Upgrade your MINI's performance with these titanium performance retainers, designed to sit at the top of the spring. Crafted from high-quality titanium metal, these retainers offer enhanced durability and strength compared to traditional options. Compatible with OEM springs or SPR-MC56-BE, these retainers are versatile and suitable for various engine setups. For a complete engine replacement, you'll need 16 of these performance retainers.

Benefits:

Enhances MINI's performance
Crafted from high-quality titanium metal
Offers enhanced durability and strength
Versatile compatibility with OEM springs or SPR-MC56-BE
Ideal for engine upgrades and replacements

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Valve Lifters

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

Schrick Solid Lifter Conversion Kit (convert Hydraulic Lifters To Sol...

Titanium Retainer - Priced Each

Titanium Performance Retainers for MINI

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