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88cc Big Bore Performance Kit (52mm):
Will fit all years xr/crf70
- 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
We recommend purchasing a high volume oil pump kit (available in this section).
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).
Hi volume oil pump available with this kit for $ 25.00
Ships free to lower 48 states & FREE GIFT while supplies last