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.
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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).
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
