GZP Adjustable main jet kit

Eliminates incorrect multiple jet changes when replacing exhaust pipes or air cleaners on all Keihin-equipped models (except CV type) from 1976 thru 1989. Full adjustability permits precise tuning for maximum performance with every combination of engine, pipes and air cleaner. This kit frees you from the limitation of the few fixed jet sizes available and the labor of drilling jets. Use new gaskets and seals when installing.