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Quantity
1
BBR introduces the first complete big bore kit for the CRF80 (and XR80)! Our new bore kit includes the cylinder making for a quick and easy upgrade. It features a 52 mm high compression piston resulting in a displacement of 95.6 cc. This k...
Reviews
4.9
33 ratings
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CRF80 BBR big bore kit
The kit shipped quick and was excellent quality, easy to install especially with the instructions given in the package. Also bought the camshaft and rockers and was very happy with the product. Highly recommend BBR
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Elliot · March 25, 2026
Big bore kit went well!
Big bore kit worked as it should, BBR forgot to send the gaskets with the kit but when I called they 2 day air shipped them. Good kit overall.
C
Chris · November 8, 2025
XR80R BBR big bore kit
Parts have been a very good quality and always seem to be packaged well. It makes the rebuild process smooth.