Premium replacement crankshaft assembly designed to meet OEM specifications, delivering durability, reliability and consistent performance for high-demand two-stroke applications.

Features

• Precision trued to OEM specifications for fit and operation


• Double-forged connecting rods for dimensional consistency and improved grain flow


• Shot-peened surfaces to eliminate residual stresses and blend forging transitions


• Corrosion-resistant surface treatment


• Case-hardened rod bores (58–62 RC) for optimal bearing running surfaces


• Optimised bearing clearance for performance and longevity


• Precision-honed bearing surfaces for ultra-round geometry


• Oiling slots to enhance rod strength and maximise bearing life


• Double-drilled small ends to improve piston pin lubrication and cooling


• Silver-coated thrust washers with dimpled faces for oil retention and reduced friction


• High-quality crank pin bearings made from hot-rolled steel and case-hardened to 58–62 RC

Specifications

• Assembly type: Factory-assembled crankshaft with connecting rod


• Intended use: High-demand two-stroke applications

Cross-Reference OEM Part Numbers

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  56-177_WI.CBK

  
  

Vehicle Fitments

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  Yamaha YZ80 1993–2001