Hayden M6 Self-Adjusting Primary Chain Tensioner for 1965-1993 Harley-Davidson Big Twin Turn Signals Lighting 7-1/2" H at tallest point

7-1/2" H at tallest point

Accepts OEM timer covers

Note: these power boxes will only work with 3-phase PMA charging systems and will NOT work with a stock XS650 charging system

This means not all 1987 Sportster models used the 44052-82 caliper

Cable and mounting hardware not included

Hayden M6 Self-Adjusting Primary Chain Tensioner for 1965-1993 Harley-Davidson Big Twin Turn Signals Lighting 7-1/2" H at tallest pointHayden 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