The sliding weight creates 105 lbs extra clamping pressure at 4000RPM. Installing the SDR without changing the coil springs will increase the clamping force by 40%
Harley Davidson Assist and Slipper Clutch; 3 Stud Style Clutch.
Click here for the fitment chart.
SDR clearance will work with most stock Harley Davidson derbycovers. Please check our fitment chart, and also download and print outour derby cover gauge to properly check clearances.
( If there are any clearance issues, a 1/4 spacer will be needed per application. )