Want more power out of your Triumph Twin? The British Customs Performance Cylinder Head Update Service has been designed with the street rider in mind. Street riders needs differ from racers; a street rider needs an increase in performance across the entire power band, where racers need more top end, wide open performance.
Note: Requires customer to send in stock head to modify. Customer is responsible for all shipping costs. It is not recommended to do the Cylinder Head Update Service without increasing air flow into the motor (see the Air Box Removal Kit) and upgrading your exhaust to a more free flowing exhaust. To further increase performance, it is recommended to port match a set of British Customs Billet Intake Manifolds, this is done free of charge when purchased or sent in with the Cylinder Head Update Service. For those looking for even more power, check out the 2mm oversize valves, street cams and racing carburetors.
THIS PRODUCT IS FOR COMPETITION USE ONLY.
NOT FOR SALE IN CALIFORNIA.