PROGRESSIVE SUSPENSION 412 Series Shocks — 305 mm (12") length, Black, Heavy Duty – 91-17 Dyna, 01-02, 07-10 CVO

🏍️ The 412 Series shocks are designed specifically for Harley models and offer a simple, durable, cost‑effective improvement to your motorcycle's suspension performance. Made in the USA, these shocks deliver reliable operation ride after ride.

• A five‑position cam‑style spring preload adjuster lets you easily dial in your ride.
• The 412's straightforward design emphasizes durability and low maintenance.
• Some or all shocks listed are approved for road use; refer to the most recent certificate for current listing.
• Multiple style options are available, including full show‑chrome or black covers, and chrome or black springs and end caps.

All shocks are measured center‑of‑eyelet to center‑of‑eyelet. When installing shocks on '86–'15 XL models, it may be necessary to modify or space the chain/belt guard to allow proper clearance. A shock slightly longer than stock may alter the head angle slightly and provide somewhat quicker steering; a shock slightly shorter than stock may alter the head angle slightly and provide somewhat slower steering.

For heavy duty applications—bikes operated at or near the manufacturer's maximum load rating over 50% of the time—choose the heavy duty option and confirm wheel travel and clearances before installation to avoid exhaust, chain/belt guard, or tire contact.