NEW BBR Big Bore Kit 88cc WithCam / XR/CRF50, 00-Present

  

NEW BBR Big Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present. 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. The most reliable kit available. Runs great with stock carb or bolt on BBR's 18mm carb kit.

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.

Cylinder retains skid plate mounts. 52mm piston specially designed to work with your stock cylinder head's combustion chamber. Installation Note: This kit will not work with the Honda XR/CRF70 or other big port cylinder heads.

Sorry, our items are NOT available for pick-up. No additional information at this time. NEW BBR Tall Seat Assembly - BBR CRF/XR50.

NEW BBR Tall Seat Cover (Black) - CRF110F, 19 - Present. NEW BBR Tall Seat Cover (Red) - CRF110/125F, 19 - Present.

NEW BBR BBR KLX/DRZ110 143cc Big Bore Kit.