Engines
TB Parts
CHINESE ENGINES
CRF50 XR50 88-06
CRF70 XR70
CT70
KLX110 DRZ110
SL70 XL70
TRX 70
XR100 CRF100
XR75
XR80 CRF80
Z50 79-87
Z50 K0-78
ZZ OTHER AND MORE
ATC 70
Pit Bike Engine Parts
Pit Bike Chassis Parts
Japan Minis
Retro Minis
Quads & Atv's
DNA MX Wheels
Clothes, Gear, Gifts & Tools
GARAGE SALE
Full Size Motocross Parts
Average Rating: 5/5 Based on 2 reviews. 170cc Big Bore Performance Kit (64mm) 53mm stroke x 64mm bore =170cc BOLT ON , NO CASE BORE REQUIRED - Skirtless Aluminum cylinder with Ceramic coating - High rpm/compression domed 64mm piston with rings, pin, & clips - Head gasket kit - Huge power increase for your YX 150 at a great price!