TBParts - 120cc Big Bore kit
for Honda XR100 & CRF100

CRF100 and XR100 120cc Big Bore Performance Kit (58mm Bore)

Big Performance Gains over stock.
This bolt-on upgrade kit will give you a lot more power, and a bit higher compression, for a very reasonable price. This is an ideal option if you're looking for a little boost, or you just need a new cylinder, piston, and rings to rebuild your engine.  There are no installation instructions, but if you can replace your piston, you can install this kit.

No case boring required

If you don't have any experience working on your engine, we highly recommend the Clymer's repair manual available at TboltUSA.

The parts are installed in the same manner as the stock Honda parts

Key Features:

• Aluminum cylinder with steel sleeve
• High compression 58mm piston with rings, pin, & clips
• Head gasket kit

Application:

• Honda CRF100 and XR100 All Years & Models

Kit Includes:

• TBW0625 - Cylinder
• TBW0626 - Piston
• TBW0627 - Gasket set
• TBW0331 - Cylinder Bolts