Once you have mastered all the bolt-on modifications, but still want more power, it is time to step up to a set of camshafts! In the Focus world, Crower cams are THE choice. Stage 1- Automatic or mild turbo/supercharger. Works well with mild bolt-ons. Great replacement cam. No head work required. RPM range:Idle-6500+. Lift .374"/.374" Duration @.050" 220/220 Lobe Center 114. Stage 2- Street/Strip package. Perfect for all-motor use. Best when used with p/n 84169 springs and retainers package. RPM range 1000-7000+. This particular grind is the favorite. Lift .413"/.393" Duration @.050" 232/228 Lobe Center 114. Stage 3- 3/4 race. Recommended mostly for strip use! Must clearance cylinder head. RPM range 1200-8000+. Springs and retainers p/n 84169 recommended. Lift .433"/.413" Duration @.050" 244/236 Lobe Center 114. A forced induction special grind as well as a Full Race grind are available by special order. Call/Email for details. Extract the most horsepower from your combination using Zetec Power Cam gears! (Available elsewhere on this website)