Big Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present
Big Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present is backordered and will ship as soon as it is back in stock.
Pickup available at BBR Motorsports
Usually ready in 24 hours
Item Fitment
Item Fitment
Big Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present - confirmed fit on the following bikes.
Shipping & Taxes
Shipping & Taxes
We pride ourselves on fast shipping on all orders. Orders placed before 5PM EST will ship the same day Monday - Friday (excluding holidays, and the occasional day off for riding).
US Customers - Taxes (if applicable) will be charged at checkout.
International Customers - Duties/Taxes will be paid at the time of delivery (not checkout).
Big Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present
Big Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present is backordered and will ship as soon as it is back in stock.
Description
Description
Impressive Power. Engineered and developed by BBR. This cylinder retains skid plate mounts and includes: BBR aluminum cylinder, piston kit, exclusive BBR motocross-grind camshaft and gasket kit. Easy bolt-on instructions included. The most reliable kit available. Runs great with stock carb or bolt on BBR's 18mm carb kit.
Also fits 1988-1999 Z50R with short piston.
- Cylinder retains skid plate mounts
- BBR aluminum cylinder
- 52mm piston specially designed to work with your stock cylinder head's combustion chamber
- MX-grind camshaft
- Gasket kit
- Easy bolt-on instructions included
Installation Note: This kit will not work with the Honda XR/CRF70 or other big port cylinder heads. It is designed for the tiny combustion chamber of the OEM Honda XR/CRF50 cylinder head. The flat top piston dome will result in an extremely low compression ratio when combined with the XR/CRF70 type cylinder head. The result is a motor that makes less horsepower than stock. This is the correct BBR bore kit for the XR/CRF70.
BBR General Jetting Guidelines Chart
Replacement Items
