Wiseco Bottom End Rebuild Kit Crankshaft Yamaha Yz125 2005-2020 Wpc163 Gaskets

Description

Wiseco Crankshaft Kit - WPC163
Includes:
(1) Crankshaft with connecting rod installed
(2) 22 x 56 x 16mm Bearings
(1) Bottom End gasket set with 10 seals
•Precision-trued to OEM specifications and factory assembled
•Shot-peening eliminates residual stresses and smoothly blends the rod forging surfaces
•Corrosion-resistant surface treatment
•Crank pin bearing radial running clearance is optimized to ensure maximum performance
•Precision honing ensures ultra-round bearing surface
•Precision-engineered oiling slots maximize rod strength and bearing life
•Double-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of top end due to thermal transfer from the piston
•Silver-coated bronze phosphor thrust washers with dimpled design increase oil retention and reduce friction between rod and washer interface
•Crank pin bearings are manufactured with the highest-quality hot-rolled steel -- case hardened to 58-62 RC
•Caged needle roller bearings provide the highest possible RPM
•Precision-machined crank webs
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