
Series 412 Shock Absorber without Covers by PROGRESSIVE SUSPENSION: a robust and straightforward shock absorber designed to replace or upgrade the rear suspension of Harley models from the Dyna lineage and touring/classic models. Built from steel with a gas-charged damping system and internal reservoir, it maintains a compact footprint while offering convenient preload adjustment.
Installation tips: check the clearance of the swingarm, belt/chain, and exhaust — a slightly longer or shorter shock absorber may alter the rake angle and handling. For XL models '86-'15, spacing or adjustment of the chain/belt guard may be necessary. Some 412 series shock absorbers are road-legal; consult the manufacturer's documentation to confirm.
Manufacturer Reference: 412-4045B. Common application examples: Harley Davidson FXDLS, FXDWG, FXDL (Dyna).