The 4100 Series shocks introduce high performance monotube technology at prices competitive with twin tube insert coilover kits.  They include purpose built strut and shock bodies, shortened from stock lengths.  All kits come with anodized aluminum adjusters that stay on the shock; no need to keep your pockets full of tools to make quick adjustments.

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 helper springs front/rear. Price is for custom rate Hyperco springs. Swift springs available at aditional cost by request.