Skip to product information
1 of 2


Wiseco Bottom End Kit - WPC128B - 1992-2001 Kawasaki KX250

Regular price $432.44 USD
Regular price $480.48 USD Sale price $432.44 USD
Sale Sold out

Wiseco Bottom End Kit WPC128B - Kawasaki KX250 1992-2001

Moto-House MX Ships this kit for Free!!

For over seven decades, Wiseco, founded in 1940 by Clyde Wiseman, has been a leading manufacturer of OEM-compatible pistons and crankshafts for a variety of motorsport applications, delivering professional-grade performance optimization solutions.

Complete bottom end gasket sets, containing all seals necessary for assembly, are provided with all Wiseco crankshafts, along with high-grade main bearings.

Kawasaki KX250 1992-2001 Wiseco Bottom End Kit:

  • Crankshaft kits include crankshaft, top end bearing, premium main bearings, and a complete bottom end gasket set that includes all seals and gaskets needed to do the job
  • Crankshafts are factory assembled and precision trued to OEM specifications
  • Double-forged Wiseco connecting rods 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 to increase oil retention and reduce friction between rod and washer interface
  • Crank pin bearings are manufactured from 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
  • Wiseco complete gasket kits are made from premium materials for maximum sealing and reliability; all bearings are OEM-quality for reliability and performance


  • Kawasaki KX250 1992-2001 / Part Number WPC128B

 See More Kawasaki KX250F Performance Upgrades Engine Mods Accessories

 Choice of Champions - The best Motocross shop in Central Florida. Located in Clermont/Groveland Fl. 

  • Moto-house MX Offers Free shipping over $65 dollars

    Free Shipping

    Orders over $65 Ship Free in the continental 48 States