PROGRESSIVE SUSPENSION 412 Series Shocks — 305 mm (12") extended length, rear – 73-86 Big Twin, 79-80, 84 Touring, 82-86 FXR, 84 Police, 85-86 Softail

The 412 Series shocks are designed specifically for Harley models and deliver a simple, durable improvement to suspension performance. ✅

• Five-position cam-style spring preload adjuster lets you quickly dial in your ride.
• Measured center-of-eyelet to center-of-eyelet for accurate fitment; some units are approved for road use — check the latest certificate.
• Multiple style options: full show-chrome or black covers; chrome or black springs and end caps.
• Made in the USA. Before changing OEM lengths, confirm wheel travel and clearance to avoid contact with exhaust, chain/belt guard, or tire.
• For '86-'15 XL models it may be necessary to modify or space the chain/belt guard for proper clearance.

Notes: A slightly longer shock can quicken steering; a slightly shorter shock can slow steering. Heavy duty applications are recommended for bikes operated near the manufacturer's maximum load rating over 50% of the time.