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Crankshaft Bottom End Rebuild Kit Yamaha YFM660R


Yamaha YFM660R Raptor 01-05 Wiseco Crankshaft Bottom End Rebuild Kit – WPC133


YFM660R Raptor 2001 – 2005

In stock

Yamaha YFM660R Raptor 01-05 Wiseco Crankshaft Bottom End Rebuild Kit – WPC133

Fits;YAMAHA YFM660R Raptor (2001 – 2005)

Bottom End Rebuild Kit includes;

crankshaft assembly, complete bottom end gasket kit, and bearings

Precision-trued to OEM specifications and factory assembled
Connecting rods are double-forged to maintain superior dimensional consistency through improved grain flow
Shot-peening eliminates residual stresses and smoothly blends the rod forging surfaces
Corrosion-resistant surface treatment
Top and bottom end rod bores case hardened to 58-62 RC to optimize bearing running surface
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 andbearing 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

Make Model Year
Yamaha YFM 660 2001 - 2005
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