88cc Stage 1 Big Bore Kit Honda XR CRF50 Pit Bike SL70 XL ATC70 TRX70 TRX Z50. 50 Caliber Racing Stage 1 88cc Big Bore kit (52mm bore).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 (can still run pump gas).
Head gasket kit includes all gasket needed to install bore kit. High volume oil pump is recommended. This is a great inexpensive way to pump up your old Honda 50 engine. This kit is recommended for those who dont want to spend a fortune but still want to see a nice power increase over the stock engine. This kit can be installed by anyone with basic mechanical skills that is not afrais to turn some nuts and bolts.
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