The 418 Series Aluminum Bodied Twin Shocks are the choice of top custom bike manufacturers for these simple reasons: Unsurpassed Quality! Killer Looks! Unbeatable Performance!
These shock bodies are manufactured from aircraft quality aluminum. They are then clear anodized for an attractive, durable and long lasting finish.
The 418's feature a 5-position rebound damping adjustment for the perfect ride. The shock shafts are made from 4130 Chromoly steel that is precision ground and hard chromed.
418 springs are all made from the highest quality materials and are available in both chrome and black powder coat finishes as well as standard or heavy duty spring rates.
A four-position cam style adjuster handles preload adjustment duties. Different lengths from stock to lowered available for most applications.
Progressive Suspension custom tuned billet aluminum damper body is lightweight and improves ride performance
Rebound damping is adjustable to five settings for great tunability
Cam style preload adjuster
Standard or Heavy-duty progressive rate springs in either chrome or black
Please see Progressive Suspensions application guide to confirm the part# needed for your application: Application Chart