TB Stock Head, 88cc Bore Kit- CRF70

Trail Bikes

$139.99 $139.99
In Stock - Usually ships in 1 business day
Fast Shipping, 60 Day Returns, Great Customer Support


88cc Big Bore
Performance Kit (52mm):

  • 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
  • XR/CRF70

We recommend purchasing a high
volume oil pump kit.

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).

Price Guarantee

Found a lower price, see our price match policy