Retrohance heads are made in line with the very latest advances in performance porting work. Unlike most of the heads on the market, Retrohance heads are developed with a focus on providing the very best performance across the rev range, rather than the peaky power band delivered by other modified heads. Oversized ports significantly reduce low down torque, making the car unpleasant to drive and ultimately delivers inferior performance. Close attention to detail means our heads give the perfect blend of insistent torque, turning into howling power as the revs rise.
Our fast road 1275 head is designed to give excellent day to day performance with a wide spread of torque. The wide power band ensures that trips to the shop remain fun, while still giving a responsive and powerful top end for when you put your foot down.
35.7mm intake valves, 29.3mm exhaust valves. 3 angle valve seats, extensive porting with higher quality components used throughout.