"These heads are strictly designed for race use. We use a special valve and valve spring combination to ensure long life, maximum flow and maximum rev potential. Special attention is engineered into the valve throat, valve seat and chamber area to cause minimum disruption to gas flow.

Price includes £60 surcharge for exchange unit. Upon receipt of your serviceable exchange cylinder head, the surcharge will be refunded by our Mail Order department.

n.b. You must inform us if you require an MPI head - the surcharge applicable with this injection head is £150. "