The Attitude Chain Adjuster from Baker Drivetrain solves the issues associated with the stock auto chain tensioner on 2006-Later Harley Davidson Dyna & 2007-Later Softail/ Touring models. The first moment the chain has enough slack into it to ratchet the shoe up another notch, and thus tightening the chain, it will. One notch tighter might not be an issue but you don’t have any control of when this mechanism stops tightening the chain. The end result in many cases is the primary chain is so tight that it will start wearing out left side motor case bearings, inner primary bearings, clutch hub bearings and transmission output gear bearings. Our manual chain tensioner allows you to adjust the chain to the proper 5/8-7/8″ (cold) free play, and never have to worry about the chain getting too tight. We offer this chain adjuster for fitment with stock outer primary covers.