The exclusive KW patented system has dual level valves that allow for adjustment of the rebound dampening for your road comfort and the compression dampening that controls the driving dynamics

Increased power output and improved engine efficiency

varying by application

85mm Intake / 11

Rally Road Universal Fuel Pump Installation Sleeve, BMW E46 M3 1303909 The exclusive KW patented systemThis adapter sleeve and clamp simplifies the installation of the larger base Walbro 400, 450, 485, 525 and 535 fuel pump into the factory fuel pump housing and carrier. Included is an all stainless steel mil spec hose clamp to secure the fuel pump. The sleeve simply slides over the pump until it bottoms out on the base and then you tighten the clamp to secure it in place. Pump is then positioned correctly in your fuel pump hanger by the locator ring