Hayden M6 Self-Adjusting Primary Chain Tensioner for 1965-1993 Harley-Davidson Big Twin Custom Yamaha Forward Controls Yamaha XS650 Rear Wheel Bearing

Yamaha XS650 Rear Wheel Bearing and Seal Kit

Choice of front or rear

Premium alternative to using stock Sportster axles

OEM-like bicycle-type styling

Custom shapes can be cut for the unique look that you are going for

Hayden M6 Self-Adjusting Primary Chain Tensioner for 1965-1993 Harley-Davidson Big Twin Custom Yamaha Forward Controls Yamaha XS650 Rear Wheel BearingHayden M6 Self Adjusting Primary Chain Tensioner for 1965 1993 Harley Davidson Big Twin The primary case is a defining feature of the Harley Davidson Big Twin, but it has its shortcomings. Chains do require adjustment, and getting the adjustment just right to accommodate shifting and clutch operation can be a balancing act. Why not do it auto magically? Spring loaded tensioner eliminates manual adjustments Applies constant, repeatable tension on the