These kits allow engine builders to install or replace the hydraulic cam chain tensioners on stock 17-25 M8 models (707244 spacers included will not fit VVT). Will also work with a combination of factory, SE or S&S oiling systems. Includes the following FEULING components 1 Outer chain (HD #25675-06) 1 Outer crank sprocket 17 tooth (HD #25673-06) 1 Replacement cam chain pad and pin (HD #25500013) 1 Spacer Kit Includes the following spacers 1-Thrust washer - front cam .100 (HD #-# 25729-06) 1- Spacer (.110 for cam alignment; use as required) (HD #25731-06) 1 -Spacer (.120 for cam alignment; use as required) (HD #25734-06) 1 -Spacer (.130 for cam alignment; use as required) (HD #25736-06) 1 -Spacer (.140 for cam alignment; use as required) (HD #25737-06) 1 -Spacer (.150 for cam alignment; use as required) (HD #25738-06)