Hot Rods 02-18 Yamaha YZ 85 85cc Stroker Crankshaft

A displacement-increasing, ready-to-install Hot Rods stroker crankshaft for Yamaha YZ85 models from 2002–2018, supplied complete for straightforward fitting and dependable assembly. This Hot Rods crankshaft is factory assembled, trued and balanced to OEM specifications and designed to increase displacement, torque and horsepower for riders seeking stronger midrange performance. The unit is sold complete with proven Hot Rods connecting rods, top end bearings, and crankshaft webs so you receive a package intended for immediate installation in most applications. High-quality DIN Class 9 (or higher) materials are used throughout. Most installations do not require piston modifications and the crank can often be fitted with the stock piston unless a specific listing note indicates otherwise, making it a practical upgrade for customization projects while preserving reliable balance and fitment standards.