ACT 4 Pad Sprung Race Disc - 4228222 Wideband Air/ Fuel Controller Turned and milled from 6061-T6

Turned and milled from 6061-T6 billet aluminum

4220112 is a 4-pad spring-centered race disc made with high quality

there are a variety of ways you can set the rail up for your car (see "Fitment Info" for application-specific fitting requirements)

StreetPro Top End Kits include:

ACT 4 Pad Sprung Race Disc - 4228222 Wideband Air/ Fuel Controller Turned and milled from 6061-T64228222 is a 4 pad spring centered race disc made with high quality, ceramic friction materials. The engagement is harsher, but shifting is faster. The heavy duty torsional dampening springs are stronger, in most cases, than standard springs and are provided in the best sizes and spring rates to suit the application. The race disc features a heat treated spring steel drive plate and is well suited for the smaller disc sizes in smaller engines.