TBolt USA is open and filling orders quicker than ever!
Email: contact@tboltusa.comText 704-826-5887Request a Callback
[More Info Here]

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

Vital Information
Part No TBW9087
Stock Level In Stock

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


  • Honda CRF100 and XR100 All Years & Models

Kit Includes:

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

Write Review

Since 2004, every purchase from TBolt USA includes access to technical support from our staff of experts and our online Pit Bike Technical Info Database!

We have all necessary support parts on hand.

Most orders ship same, or next business day, unless otherwise noted above.


Share Product
Share on Twitter Share via E-Mail