Progressive Suspension Series 412 Covers Shock absorberRef : PRSU00046A / 13100705

Progressive Suspension Series 412 with Covers (Manufacturer's Ref: 412-4046B)

Series 412 shock absorbers specifically designed for many Harley-Davidson models. The simple and robust design of the Series 412 offers an economical solution to improve suspension behaviour without unverified technical promises. Black steel body, gas-charged, and internal reservoir for consistent tuning and response on long road trips and vintage rides.

• Extended Length: 305 mm (12.00").
• Preload Adjustment: 5-position cam to adjust spring preload according to load and rider.
• Duty: Heavy — Heavy Duty options recommended for use close to the manufacturer's maximum load.
• Finish: black (black covers available; several finish styles and springs — chrome or black).
• Mounting: measured centre to centre of eyelet; primarily intended for the Harley models listed by the manufacturer.

Practical notes: some or all shock absorbers may be road-legal — check the most recent certificate for the updated list. When installing on XL models ('86‑'15), modification or spacing of the chain/belt guard may be necessary to ensure clearance. A shock absorber slightly longer or shorter than the original may alter the rake angle and steering responsiveness. Always check the travel and clearances (swingarm/axle, exhaust, chain/guard, tyre) before installation.