Description
If you’re rebuilding a YZ125 two-stroke or pushing your engine to its limits, a worn or damaged crankshaft will quickly become your bottleneck. The Wiseco WPC124 eliminates guesswork with a factory-assembled, precision-trued crankshaft paired with everything you need for a complete bottom-end refresh—main bearings, top-end bearing, and gasket set included. This is the kind of comprehensive kit that separates a proper rebuild from a rushed one.
Wiseco’s double-forged connecting rods and shot-peening process reduce internal stress concentrations, translating to better durability under the high RPM demands of a competition 125. The case-hardened rod bores and corrosion-resistant surface treatment ensure longevity in harsh riding conditions, while precision-honed bearing surfaces with engineered oiling slots maximize film strength and bearing life. You get the reliability of OEM-spec fitment with the strength engineering that serious racers expect.
- Fits: Yamaha YZ125 (1998–2000)
- MPN: WPC124
- Double-forged connecting rods
- Factory-assembled, precision-trued
- Caged needle roller bearings
- Shot-peened for durability
- Case-hardened rod bores
- Corrosion-resistant surface treatment
- Includes main bearings
- Includes top-end bearing
- Includes gasket set
- Engineered oiling slots
- Bolt-on installation ready
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