CFM Stage II Ported Cylinder Head for '00-04 Focus Zetec (Exc. SVT)

This cylinder head offers a substantial improvement over the stock one. It features 33mm intake valves, 29mm exhaust valves and has Ford Racing springs and retainers which are good up to .400 lift. 

All flow numbers at test pressure of 28".

C-F-M STAGE 2 Cylinder head.               Stock flow number             Ford racing  

Lift       Intake     Exhaust                      Intake         Exhaust          Intake     Exhaust
.100        86              94                       79.00          68.1               72.3          77.8
.200       162           173                       143.6          125.7             152.80      165.10
.300       203           200                       174.80         148.00          195.80      189.60
.400       218           209                       184.30         155.00          217.10      195.80
.450       224            213                      183.4           155.6            220.00      198.00