Fully in house ND ported cylinder head, We have been porting our own heads for well over a decade. We produce the best heads on the market with the best results………just look at our demo cars for proof!

The procedures included in this S1 head are as below;

– Port, polish & blend
– Modify combustion chambers & balance volumes
– Fully de-burred
– Skimmed surface
– 3 angle valve seats

Parts included with head;
– ND valve spring kit
– ND shim set
– New high temp valve stem seals
– Std retainers
– Std valves

(Suits 2.0 Engines best) (Rated to 750Hp)