4446
New product
The Stage 1 Big Bore Kit from 50 Caliber Racing is top quality and comes with everything you need to finish the job. This is a great way to pump up your Honda Z50, XR50 or CRF50. This kit is recommended for those who don't want to spend a fortune but still want to see a nice power increase over the stock engine. It can be installed by anyone with basic mechanical skills who isn't afraid to turn some nuts and bolts.
In stock
Scroll down for fitment and details!
Warning: Last items in stock!
50 Caliber Racing Stage 1 88cc Big Bore kit (52mm bore) for Z50 (1988-1999), XR and XR50 / CRF 50 (2000-Present)
Our 50 Caliber Racing Stage 1 Big Bore Kit is top quality and come with everything you need to finish the job. This is a great way to pump up your Honda Z50, XR50 or CRF50. This kit is recommended for those who don't want to spend a fortune but still want to see a nice power increase over the stock engine. It can be installed by anyone with basic mechanical skills who isn't afraid to turn some nuts and bolts.
Includes:
- 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 big bore kit
Fits:
HONDA
- Z50 (1988-1999)
- XR50 (2000-Present)
- CRF50 (2000-Present)
*High volume oil pump is recommended
HONDA
- Z50 (1988-1999)
- XR50 (2000-Present)
- CRF50 (2000-Present)