CRANKSHAFT BOTTOM KIT 02-04 KX250, WISECO WPC128A KAWASAKI
Wiseco Bottom-End Rebuild Crankshaft Kit WPC128A. 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 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. Part No. 56-175.WI.A.
- SKU
- 56-175.WI.A
- Brand
- Wiseco
- Availability
- In Stock (1)
FULL DESCRIPTION
Wiseco Crankshaft Bottom-End Rebuild Kit
This Wiseco Crankshaft Bottom-End Rebuild Kit is designed for high-performance engine rebuilding. It offers superior durability and optimized performance for your motorcycle.
Key Features:
- Precision-Trued Crankshaft: Engineered to OEM specifications for accurate fitment and reliable operation.
- Double-Forged Connecting Rods: Ensures consistent dimensions and improved grain flow for enhanced strength.
- Shot-Peened Surfaces: Eliminates residual stresses and smooths forging surfaces, reducing the risk of fatigue failure.
- Corrosion-Resistant Surface Treatment: Protects components from environmental damage and extends their lifespan.
- Case-Hardened Rod Bores: Hardened to 58-62 RC for an optimal bearing running surface.
- Optimized Crank Pin Bearing Clearance: Ensures maximum performance and efficiency.
- Precision Honing: Guarantees an ultra-round bearing surface for smooth operation.
- Engineered Oiling Slots: Maximizes rod strength and bearing life by improving lubrication.
- Double-Drilled Small Ends: Provide extra lubrication and cooling to the piston pin, reducing thermal distortion.
- Silver-Coated Bronze Phosphor Thrust Washers: Feature a dimpled design to increase oil retention and reduce friction.
- High-Quality Crank Pin Bearings: Manufactured from top-grade hot-rolled steel and case hardened to 58-62 RC.


