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Kickstarter Shaft Diameters

Overview​

Throughout the years, all Honda-type engines have utilized the same shaft size for kick starters. This includes models such as the Z50, XR50/70, CRF50/70, CT70, and China 50-125cc. This is commonly referred to as the 14mm Type, with splines measuring approximately 13.5mm.

Specific Engine Types​

  • Honda Horizontal Engines: 50/70cc
  • Chinese Engines: 50-110cc
  • Lifan Engines: 125cc

These engines are compatible with the 14mm Type kick starter.

Early Models​

  • YX160
  • YX140
  • ZS155cc
  • Piranha 140cc Bottom Electric Start WHS-3284

These early models also require the 14mm Type kick starter.

Larger Shaft Models​

Some models, such as the ZS155cc HO and Piranha YX 125cc, necessitate the 16mm Type kick starter.

Latest Versions​

The latest versions of the following engines use a larger kicker shaft, the 16mm Type, with splines measuring approximately 15.5mm:

  • Daytona 190cc
  • ZS190cc
  • ZS 155cc
  • YX140cc Kick Start ONLY
  • YX160cc

Conclusion​

These measurements are crucial when considering compatibility and upgrades. Always verify with detailed specifications or consult your engine's manual.