Hawk ER-1 Race Front Brake Pads - 08-13 BMW 135i 3.0L Base - HB603D.616 819 Series The side pivot arm now

The side pivot arm now comes with a heavy-duty stainless spherical bearing for increased performance and smoothness

Civic from 1988-2000 including CRX

Also some supercharger do not have a 1″ lip to clamp it too

With the 6-pad spring-centered race disc engagement is harsher

Hawk ER-1 Race Front Brake Pads - 08-13 BMW 135i 3.0L Base - HB603D.616 819 Series The side pivot arm nowER 1 has been developed by Hawk Performance for the endurance racing market with a simple goal; offer a higher coefficient of friction than competing endurance pads while maintaining matched or improved lifespan. Years of testing across Americas most prestigious races has resulted in a well rounded compound that offers ideal modulation and pedal communication, with ground breaking friction stability across a thermal range as high as 1,600F. This