XFWD Ported B Series Head

Our XFWD spec cylinder head has been a front runner since it's inception

Constant development & testing has allowed us to provide many racers with the highest flowing head on the market, while retaining appropriate wall thickness for longevity.

Includes:

5 axis CNC porting

Bronze valve guides

JBR SPEC Ferrea Spring Kit

6mm Standard size Exhaust valves (option for 5.5mm)

33mm intake valves

Newen Multi-angle/radii Valve job 

** Customer Must Supply Core**