7" bolt circle (100mm mount hole to mount hole distance)

84-99 Big Twin (Excl

08-21 e-throttle & 88-11 Springers) with 1" I

08-up Electra Glide style with e-throttle

a rebuildable bronze pinion shaft bushing and for 07-17 models rebuildable bronze cam bushings

PS 490 SPORT SERIES SHOCKS 12.5" Dyna 06-09 Laddning 7" bolt circle (100mm mountWith spherical style bearings. 490 series Sport Series. A true sport performance shock, with a competitive price tag. Features a high pressure nitrogen monotube with deflective disc technology and a linear rate spring for the most consistent feel throughout the damper stroke on both street and track. Preload and rebound adjustability by hand. An engineered jounce bumper with a built in metal cup smooths and controls bottoming out. What are Progressive