Wiseco Crankshaft Assembly for 2004-2007 Kawasaki KX250F WPC144

A quality crankshaft assembly is the foundation of engine reliability and performance—without it, you're risking catastrophic failure and lost race time. The Wiseco WPC144 delivers factory-assembled precision and durability right out of the box, eliminating the guesswork in KX250F rebuilds. Whether you're replacing a worn crank or building a fresh engine, this complete assembly gives you the confidence to push hard on the track.

Every component in this assembly is engineered for the demands of high-RPM racing. The double-forged connecting rods maintain dimensional consistency lap after lap, while shot-peening eliminates stress points that typically lead to fatigue cracks. You get matched bearings, gaskets, and precision-honed oiling slots all working together to maximize lubrication and minimize wear—exactly what a KX250F needs to stay reliable under sustained competition.

• Factory assembled, precision trued
• Double-forged connecting rods
• Shot-peened surfaces
• Corrosion-resistant, case-hardened
• Precision honing engineered
• Caged needle roller bearings
• Complete gasket set included
• OEM specification fitment
• High-RPM capable
• Kawasaki KX250F 2004-2007