M20 Stroker Sleeve

If you're building an M20 stroker, this crankshaft adapter sleeve is non-negotiable — it's what makes the stroker crank fit the M20 block.

BimmerHeads developed this sleeve after finding that other options on the market fell short in quality and fitment. After years of M20 stroker builds, this is the sleeve we trust — built to the tolerances the job demands, and the one we've never had to second-guess.

• Fits: all BMW M20 stroker builds (2.9L, 3.0L, 3.1L)
• Made in the USA to BimmerHeads specifications
• Finished in-house at BimmerHeads
• Includes option to add a machined crankshaft bolt washer (required for proper fitment)

The same sleeve behind every M20 stroker we've ever built.