PROGRESSIVE SUSPENSION 412 Series Shocks — 343 mm (13.50") , rear, black – 91-17 Dyna, 01-02, 07-10 CVO

The 412 Series Shocks are a straightforward, durable upgrade designed specifically for Harley models. They deliver improved suspension performance with a simple, serviceable design and a five-position cam-style spring preload adjuster so you can quickly dial in your ride 🔧.

Key features

• Designed specifically for Harley models.
• Simple, durable design for cost-effective suspension improvement.
• Five-position cam-style spring preload adjuster for easy tuning.
• Some or all shocks listed are approved for road use; refer to the most recent certificate for current listings.
• Multiple style options: full show-chrome or black covers; chrome or black springs and end caps.
• Made in the USA.
• Measured center-of-eyelet to center-of-eyelet.

Installation & fit notes

When installing on ’86–’15 XL models, it may be necessary to modify or space the chain/belt guard for proper clearance. A shock slightly longer than stock can alter head angle and quicken steering, while a slightly shorter shock can slow steering. For heavy duty use near the manufacturer's maximum load rating over half the time, choose heavy duty applications. Before purchasing or installing shocks that differ from OEM length, confirm wheel travel changes will not cause clearance issues such as swingarm/axle to exhaust contact, chain/belt guard interference, or tire contact.