
Key Features & Specs:
Fitment:
The Brian Crower BC0989 lightweight stroker kit is designed for 2021+ Polaris Pro R engine builds requiring increased displacement, billet crankshaft strength, and premium rod construction. This rotating assembly includes a 4340 billet crankshaft with a 78mm stroke, an induction hardened timing chain gear, BC ProH2K connecting rods, and custom CP pistons available in your selected bore size and compression ratio. Depending on bore size, this kit supports displacement options from 2.13L to 2.26L, making it a strong foundation for high-performance Polaris Pro R race, dune, and off-road builds.