Hayden M6 Self-Adjusting Primary Chain Tensioner for 2001-2006 Harley-Davidson Big Twin Cables/Switches & Controls Handlebars and Controls Works with both 7/8" and

Works with both 7/8" and 1" Diameter Handlebars

Handlebar Extended Wiring +12" For Big Twin & Sportster 1973-1981

Economical choice when building a bike from scratch

This direct replacement will get you back on the road in a jiffy

See the infographic to see exactly how this looks—it isn't pretty

Hayden M6 Self-Adjusting Primary Chain Tensioner for 2001-2006 Harley-Davidson Big Twin Cables/Switches & Controls Handlebars and Controls Works with both 7/8" andHayden M6 Self Adjusting Primary Chain Tensioner for 2001 2006 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