Progressive Suspension Series 412 without Covers Shock absorberRef : PRSU00055A / DS310093

Series 412 Shock Absorber (without covers) – Progressive Suspension
Manufacturer reference: 412-4005C

Designed for Harley customs and Sportsters, this Series 412 shock absorber provides a simple and robust solution to modernise the suspension of vintage, roadster, and touring motorcycles. The version without covers offers a clean aesthetic and direct fitment on many Harley models.

• Finish: shiny chrome, solid steel body
• Reservoir: internal, gas-charged damping for consistent response
• Function: standard, extended length: 279.40 mm (11.00") (measured centre to centre)
• Adjustment: spring preload via 5-position cam to adapt height and load behaviour
• Manufacturing: United States
• Installation notes: the shock absorbers are measured eye to eye; check clearances and travel before installation

Warning: on certain XL models ('86–'15), spacing or modification of the chain/belt guard may be necessary. A shock absorber that is slightly longer or shorter than the original may alter the rake angle and steering responsiveness. For frequent use at full load, consider Heavy Duty applications. Always check travel and clearances (swingarm, exhaust, chain/guard, tyre) before installation.

Compatible motorcycles (examples): Harley Davidson XL 1200C, XLH 883 Sportster Hugger, and XLH 883 Sportster (2003).