Benefits include:

• Monotube design - gives the biggest piston sizes available
• Floating piston design with high pressure nitrogen means no cavitation around the piston
• Adjuster knobs permanently mounted on the dampers – no fumbling for knobs
• Fully threaded strut bodies allow maximum tire width without fender rolling or larger spacers
• Rebuildable by AST-USA – get the valving you want, when you want it.

AST-USA provides a 12 month warranty on the 4100 Series shocks and dampers. 

» Rebound Adjustable ("Singles")
» 22mm diameter shaft struts, non-inverted
» Steel cylinder body shocks, non-inverted
» Rubber bushings for "eye" shock mounts
» Optional spherical upper shock mount assemblies
» Non-synthetic hydraulic fluid

Price includes 4 helper springs with Hyperco main springs of custom spring rate of your choice. Swift main springs also vailable at aditional cost.