90.5mm/92mm
 
One Pair (2 heads)
 
 
 
D-Port HI-REV™ Polished Cylinder Heads
Smart port design for total performance (2,000 – 6,000 RPM)
40MM intake X 37.5MM exhaust
Swirl-polished with Venturi intake and exhaust runners
Dual valve springs & 4140 chromoly retainers
Efficient combustion chamber (1950cc – 2275cc)
 
ALSO AVAILABLE:
Match ported IDF/DRLA Inlet Manifolds at extra cost.
 
Fits all Type 1 engines
 
 
 
Additional information
Weight 13 lbs
Dimensions 16 × 7 × 7 in
Bore
90.5/92mm