Engine Kit – 88cc Flat Top Big Bore with Cam – XR50R/CRF50F 2000 – 2023

Description

Convert your CRF/XR50 to an 88cc screamer with this complete kit. Everything is included to upgrade the performance of you mini-bike. This kit uses your stock CRF/XR50 cylinder head

Aluminum BBR cylinder

Special 52 mm piston specially designed to work with your stock cylinder head’s combustion chamber

BBR special grind camshaft take full advantage of the large piston for great performance

Special BBR tapered aluminum intake manifold adapts the large carb to the stock intake port size

18 mm carb includes extra main and pilot jets for easy tuning

Also includes CR style throttle, cable, air filter and top end gasket kit

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 combine with the XR/CRF70 type cylinder head.