You will receive one (1) cylinder head insert for your make/model.
This CNC machined TSP head insert can only be used with the TSP head. It is not interchangeable with other heads. If you do not have a TSP head, please see the TSP head category on our web site. the TSP insert features an improved combustion chamber design that gives more performance from bottom to top as well as reduced risk of detonation.
The TSP head inserts come in different compression ratios, and are designed to be interchangeable for different riding conditions and elevation changes to suit any riders needs.
All TSP mods are designed and dyno tested in-house at TSP so you can be sure you’re getting reliable performance for all conditions.