• Complete stroker kit by BimmerHeads for BMW M20 engines shown with CP pistons and ACL bearings.
  • Custom forged CP pistons for BMW M20 engine
  • Set of 6 Molnar H-Beam connecting rods with ARP hardware for BMW M20, S50, and S52 engines.
  • Stroker sleeve for BMW M20 engine shown with optional washer.
  • A set of ACL Race Series main bearings for BMW M20, S50, and S52 engines, displayed in front of its packaging box.
  • A set of ACL Race Series connecting rod bearings for BMW M20, S50, and S52 engines displayed in front of its packaging which reads 'Performance Engine Bearings'.
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M20 Stroker Kit

M20 Stroker Kit

$2,410.00 USD
$2,410.00 USD
Sale Sold Out
Shipping Calculated At Checkout.
Kit Size & Main Bearing Style
Molnar H-Beam Connecting Rods
Turbo Piston Upgrade

The BimmerHeads M20 Stroker Kit is the result of more in-house M20 stroker builds than we can count — refined over years of real engine work, and spec'd the same way we'd build our own. Available in 2.8L, 2.9L, 3.0L, and 3.1L for early (1987 and earlier) and late (1988 and later) M20 blocks.

Not sure whether your M20 block is early or late? Our M20 Bearing Differences guide is coming soon and explains the differences and how to identify your block before you order.

Every kit includes:

  • CP-Carrillo 2618-T1 forged piston set — pistons, wrist pins, piston ring set, and wrist pin clips. The clear choice for M20 builds after years of in-house testing at BimmerHeads
  • Reconditioned original BMW crankshaft (2.8L) or forged original BMW crankshaft (2.9L and larger) — every crankshaft cleaned, inspected, and micro-polished before assembly
  • Crankshaft seal adapter sleeve, OEM crankshaft bolt, and machined washer (2.9L and larger)
  • ACL Race main and connecting rod bearing sets — the bearings we spec on every in-house M20 build

Options:

  • Molnar H-Beam connecting rods — 4340 billet, ARP2000 hardware, ±.0001" tolerances, USA-made. Standard or Power Adder versions available at a discounted rate when added to this kit
  • Turbo piston upgrade — heavier-duty piston casting with upgraded rings and wrist pins for forced induction builds

Standard specs: 885 head casting, 10:1 compression, 85mm bore — all customizable at no charge (request at checkout or email us after ordering). Designed for 135mm connecting rods — compatible with Molnar H-Beam rods, OEM M20B25 rods, and OEM S50/S52 rods.

Combine this kit with a Super Sport 885 Cylinder Head or Race 885 Cylinder Head for a complete high-performance M20 build.

Each kit is built to order — no cancellations are accepted once placed. Allow a minimum of 6–8 weeks production time. Have questions before ordering? Contact us — we're happy to help you configure the right kit.

This is the kit we spec for ourselves. Every crankshaft micro-polished, every bearing set hand-selected, every component inspected before it ships. If it doesn't meet our standard, it doesn't leave our shop.

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