Trail Bikes Stock Head 88cc Bore Kit for CT70

TB Parts

$139.99 $139.99
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Same great quality CRF50/XR50 88cc kits now for Vintage

88cc Big Bore Performance Kit (52mm)

Installation Note: It will save a lot of time and effort if the oil pump is installed while installing the bore kit (requires cylinder removal).


  • Lightweight aluminum cylinder with steel sleeve
  • Cast in mounts on cylinder for aftermarket skid plates
  • Oversized cooling fins on cylinder for efficient heat dissipation
  • High compression 52mm piston with rings, pin, & clips
  • Head gasket kit 

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