PROGRESSIVE SUSPENSION 412 Series Shocks — 305 mm (12.00\") extended length, rear – 91-05, 08, 10-17 Dyna, 01-02, 07-10 CVO

The 412 Series Shocks are a simple, durable suspension upgrade designed specifically for Harley models, offering a cost-effective improvement to ride performance. ⚙️

A five-position cam-style spring-load preload adjuster lets you easily dial in your ride to match load and road conditions.

All shocks are measured center-of-eyelet to center-of-eyelet. Some or all shocks listed are approved for road use; refer to the most recent certificate for the current listing.

Multiple style options are available, including full show-chrome or black covers, and chrome or black springs and end caps. Made in the USA.

When installing 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 or shorter than stock can alter head angle and steering response.

Heavy duty applications are recommended for bikes operated at or near the manufacturer's maximum load rating over 50% of the time. Before purchasing or installing shocks with a different OEM length, confirm wheel travel and clearances to avoid exhaust, chain/belt guard, or tire contact.