120cc Big Bore Kit with Cam - XR/CRF100 - 411-HXR-1001

120cc Big Bore Kit with Cam - XR/CRF100 - 411-HXR-1001120cc Big Bore Kit with Cam XR CRF100 BBR Motorsports celebrates one of the best selling dirt bikes of all time with this high compression 120cc big bore engine kit for the XR CRF 100. Increased displacement, higher compression and large cooling fins enhance the performance and longevity of the motor. This is the only XR CRF100 bore kit that matches the new rocker arms perfectly to the new high performance BBR cam shaft. This kit is ready to go and

The TB Parts Race Head has been updated for even more performance

Works with the Takegawa +R 2 Valve Heads and also the TB Parts V2 Head

TB Forged Aluminum Shift Lever – This is a very high quality aluminum shift lever with the following features:

this happens because of the rpm difference between the engine and the rear wheel

Stock main is 190 and stock pilot is a 22

Stage 5 Compression adjustment = High & Low-speed

Slows rebound and increases compression damping for a firmer more controlled ride

500-BBR-1001

Next is the race head included in this kit

Mikuni VM26mm Performance Carb Kit - TBW9013

: Plush backside

Knurled grip area to resist slippage