Taking the knowledge and experience learned with the 4000 Series of dampers, AST is now building the new 5000 Series dampers. One key design feature of the 5000 Series are their inverted strut design, which makes for a very stiff strut assembly, providing better suspension geometry under heavy lateral and braking loads seen in a road course environment.

Another key feature on the 5000 series shocks and struts is modularity, which makes them easily upgradeable. This provides an upgrade path for customers on a tight budget that want an adjustable, high performance, race-ready shock but can't quite afford the double adjustable 5200 or triple adjustable 5300. Simply purchase 5100s, and when you're ready, send your ASTs to an authorized rebuild center to upgrade them to 5200s or 5300s with remote reservoirs. Rest knowing that your shock absorber investment will perform today and in the future, as your budget and needs grow. 

Current Applications

• BMWs 3 Series (E36, E46)
• Subaru WRX/WRX STI
• Any standard aluminum body coilover shock configuration
• Inquire about others including custom applications

AST USA 5100 Shock Absorbers

» High end, track ready suspension that is totally streetable
» Modular design - Fully upgradeable to 5200 or 5300 spec
» Rebound Adjustable ("Singles"), without reservoir
» Certain models will have remote reservoirs, for adequate travel
» 44.5mm diameter shaft struts, Inverted
» Aluminum cylinder, threaded body shocks, factory mounting style
» Shock may also be inverted, on some modes Ex. Corvette, Mini Cooper, VW GTI
» Spherical lower "eye" shock mounts
» Spherical upper shock mount assemblies
» Synthetic hydraulic fluid
» Download 5100 retail pricing

AST USA 5200 Shock Absorbers

» High end, race ready suspension that is totally streetable
» Modular design - Fully upgradeable to 5300 spec
» Rebound and Compression Adjustable ("Doubles"), with a remote reservoir
» Remote reservoirs allow additional travel and heat dissipation
» 44.5mm diameter shaft struts, Inverted
» Aluminum cylinder, threaded body shocks, factory mounting style
» Shock may also be inverted on some models Ex. Corvette, Mini Cooper, VW GTI
» Spherical lower "eye" shock mounts
» Reservoir with hose or piggyback (piggyback examples: ’08 STI & BMW E36 rears)
» Spherical upper shock mount assemblies
» Synthetic hydraulic fluid
» Download 5200 retail pricing

AST USA 5300 Shock Absorbers

» High end, track ready suspension that is totally streetable
» Rebound, Low & Hi Speed Compression Adjustable ("Triples"), with a remote reservoir
» Remote reservoirs allow additional travel and heat dissipation
» 44.5mm diameter shaft struts, Inverted
» Available with 50 and 60mm diameter Inverted shaft struts (special order)
» Aluminum cylinder, threaded body shocks, factory mounting style
» Shock may also be inverted on some models Ex. Corvette, Mini Cooper, VW GTI
» Spherical lower "eye" shock mounts
» Reservoir with hose or piggyback (piggyback examples: ’08 STI & BMW E36 rears)
» Spherical upper shock mount assemblies
» Synthetic hydraulic fluid
» Download 5300 retail price sheet PDF
» Download 5300 Rally Line price sheet PDF