CRANKSHAFT BOTTOM KIT 98-00 YZ125, WISECO WPC124 YAMAHA MX
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Wiseco Crankshaft Assembly with Bearings Gasket set and crank main bearings WPC124. 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 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 materials. Part No. 56-179.WI.
- SKU
- 56-179.WI.CBK
- Brand
- Wiseco
- Availability
- In Stock (2)
Fitments (3)
| Make | Model | Year |
|---|---|---|
| YAMAHA | YZ 125 | 1998 |
| YAMAHA | YZ 125 | 1999 |
| YAMAHA | YZ 125 | 2000 |
- General Product Group
- Crankshafts & Parts
- General Product Type
- Crankshaft Bottom End Kits
- Variant Id
- 250168
FULL DESCRIPTION
Wiseco Crankshaft Bottom Kit for Yamaha YZ125
This Wiseco Crankshaft Assembly is designed for high-performance applications, ensuring your Yamaha YZ125 operates at its peak. Engineered with precision and durability in mind, this kit includes all necessary components for a complete bottom end rebuild.
Key Features:
- Precision-trued to OEM specifications for a perfect fit.
- Factory-assembled connecting rods are double-forged for superior dimensional consistency and improved grain flow.
- Shot-peening process eliminates residual stresses and smooths rod forging surfaces.
- Corrosion-resistant surface treatment enhances longevity.
- Top and bottom end rod bores are case-hardened to 58-62 RC to optimize bearing running surfaces.
- Optimized crank pin bearing radial running clearance ensures maximum performance.
- Precision honing creates an ultra-round bearing surface.
- Engineered oiling slots maximize rod strength and bearing life.
- Double-drilled small ends provide extra lubrication and cooling to the piston pin, reducing top-end distortion from piston thermal transfer.
- Silver-coated bronze phosphor thrust washers with a dimpled design increase oil retention and reduce friction between the rod and washer interface.
- Crank pin bearings are manufactured using the highest-quality materials.
- Kit includes bearings and gasket set.
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