Big bore kits from 88cc, to 108cc for your Honda 50, z50, xr50, crf50, crf70, ct70, and so on. They also make clutch kits, high volume oil pumps, and many other performance items.
Stage 1 88cc Big Bore kit for 88-99 Z50, 2000-2020 xr and crf 50's
- 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.
Stage 2 88cc Big Bore kit for 88-99 Z50 and 2000-2020 xr and crf 50
- 20mm Carburetor kit
- Performance camshaft - 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 (you can still run pump gas) - Head gasket kit
Ready for more power? Convert your 88cc Race Head kit into a 108cc stroked out beast!! (Much more powerful than any of the chinese engines up to 125cc)
This kit is the same as the Stroker Kit 4 but also includes a 26mm carburetor for much better performance. This is an affordable kit that will convert your 88cc Race Head kit into a powerful open class 117cc engine. (Much more powerful than the common Chinese 107 and 125cc engines) with tons of torque!
88cc Race head kit for Your Honda 50 or Honda 70. This kit will drastically improve your overall performance on your bike. A stock honda 50 puts around 2.2hp to the ground and this kit will put you between 5.5-6hp to the ground and 30% more to the crank! Kit comes with fully assembled race head, performance cam, 20mm carburetor, and all the other goodies needed to fulfill your need for speed!
Stage 1 88cc Big Bore kit for Honda xr and crf 70's. Fits all years
- 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.
Stage 2 88cc Big Bore kit for Honda xr70 and crf70 all years
- 20mm Carburetor kit
- Performance camshaft - 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 (you can still run pump gas) - Head gasket kit
