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TBParts - 88cc Big Bore Kit
for Z50 CRF50 XR50 1988-Present

Vital Information
Part No TBW0928
Stock Level In Stock

Give that 50 some power with this 88cc big bore kit! 
This is a great upgrade for the Honda Z50, XR50 or CRF50.
Motoped 49cc 

Key Features:

  • Lightweight aluminium cylinder with steel sleeve
  • Cast in mounts on cylinder for after-market skid plates
  • Oversized cooling fins on cylinder for efficient heat dissipation
  • 52mm piston with rings, pin, and clips
  • Head gasket kit

A high-volume oil pump is recommended!

Exceeds OEM Specification


  • Honda Z50 1988-1999
  • Honda XR50 All Years
  • Honda CRF50 All Years

Kit Includes:

  • TBW0190 Piston
  • TBW0206 Gaskets
  • TBW0156 Cylinder

We Recommend Premium Fuel 

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Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.