High Performance Head
$1,450.00
Bonneville Performance offers our hi-flow performance heads with new 1mm and 2mm larger valves included with the porting. NOTE: Customer’s head is required to complete this project and product. Shipping your head to us is not included. A $52.00 USD Shipping & Handling fee (for shipping from us to customer) is automatically added when checking out. Use the Contact Form to email us about international shipping costs and options.
The Bonneville Performance High Performance Head is available for 2001 thru 2014 Bonneville, Thruxton, America, Speedmaster and Scrambler motorcycles. We offer 1mm and 2mm larger valves with our hi-flow performance heads. A stock Triumph Bonneville head flow is 181 cfm. Our 1mm hi-flow head increases the head flow to 236 cfm and our 2mm over head increases the flow to 256 cfm.
Additional information
| Select Size | 1mm – 236cfm, 2mm – 256 cfm |
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Alonzo –
Bill’s heads are brilliant; this head, along with the matching manifolds and his cams have given me a new engine.
My bike is now a certified Hot Rod, but is as streetable as a stock bike.