This kit allows engine builders to replace the hydraulic cam chain tensioner pad on stock 17-25 M8 models Note: Includes 707244 spacer kit ; which will not fit 23-up VVT models). Will also work with a combination of factory; SE and S&S systems. Includes the following Feuling components: 1 Outer chain (H-D #25675-06) 1 Outer crank sprocket 17 tooth (H-D #25673-06) 1 Replacement cam chain pad and pin (H-D #25500013) 1 Spacer Kit Includes the following spacers 1-Thrust washer - front cam .100 (H-D #-# 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)