Designed to work on all 99-17 Twin Cam models. Kit comes with 3 color-coded springs to increase oil pressure by installing a superpump spring in the pressure relief valve of the cam support plate. Average achieved pressures are for the blue spring 20 psi-up, yellow spring 10-20 psi and red spring less then 10 psi. Note: Tool 909503 is required for installation and must be purchased separately. Note: Average oil pressures as given are measured with a warm engine, 2000 RPM and up.
