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Engineered and developed by BBR. This cylinder retains skid plate mounts and includes: BBR aluminum cylinder, piston kit, and gaskets. Custom piston designed specifically for the OEM Honda XR/CRF70 cylinder head . 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
Gasket kit
Note: Do not use this bore kit with the OEM Honda XR/CRF50 cylinder head. This piston dome is too tall and will hit causing damage to your engine. Use our bore kit intended for that cylinder head: Bore Kit - 88cc W/Cam / XR/CRF50, 00-Present
Save on Big Bore Kit - 88cc XR/CRF70, 97-12 with a BBR Motorsports coupon
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