PROGRESSIVE SUSPENSION 13 SERIES DUAL SHOCKS SPRINGS BLACK Spark plug wires It utilizes a large 46

It utilizes a large 46 mm bore with deflective disc damping

Tach adapter required for single-fire ignitions (Pre 04 Models only)

Covers measure 2 7/8" in diameter

All components are interchangeable with OEM parts

5/16" (10)

PROGRESSIVE SUSPENSION 13 SERIES DUAL SHOCKS SPRINGS BLACK Spark plug wires It utilizes a large 4613 Series Shock Springs13 Series O R shocks contain Freon cells for fade free performance Same features as the standard 1200 Series, but set up for the special demands of dual sport and off road riding Standard spring is recommended for bike as sold new, excluding any accessories, rider weight under 200 lb. and passenger use limited to under 50% of the time. Heavy duty spring is recommended for riders over 200 lb., passenger usage over 50% of the time