FVD spec. Billet 993gt2/993 turbo cylinder heads:

interchangeable fit with GT2 & turbo standard cylinder head
fully cnc machined from solid billet for maximum geometrical accuracy
made from aerospace grade 2618 aluminum alloy, as commonly used for f1 & GT race pistons which has the highest possible material strength at elevated temperatures
machined for 49.0 x 9.0 intake and 41.5 x 9.0 exhaust valves
optimized combustion chamber reduces squish crevice volume - the effect of which increases chamber turbulence and results in higher flame speed, which improve 's power, torque and efficiency.
15mm outside diameter sintered steel valve guides for reduced wear & improved valve support at high temperature
sintered steel valve seats for maximum life & heat rejection from valves
advanced intake & exhaust port design (optimized for high velocity)
solid lower fins for maximum strength around cylinder seal
small diameter spark plugs to reduce stress around plug holes
pocket & drilling on top face for oil cooling from 993 cam carrier
stock intake small diameter spark plugs to reduce stress around plug holes

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.