Proven on the street and track, this system is unmatched by any other system on the market. HP Autowerk's unique AST dampers matched with our custom Swift springs offers superb street manners and unmatched cornering capabilities for the track. Offering separate external compression(Double Adjustable Only) and rebound adjusters, the dampers can be tuned from street comfort to a full race setup in a matter of minutes.

We use the highest quality motorsport springs sourced from Swift. Why Swift?

Swift's R & D team created material, called H5S.TW, which is stronger then regular silicone chrome material. Because of this material, we could make the spring wire thinner, and could wind the springs with fewer coils, which greatly decreased weight while dramatically increasing available stroke.

We also use thrust sheets where possible. Here is why:

Thrust sheets provide a variety of benefits to coilover systems. As a spring becomes compressed the coils attempt to distribute the energy by unwinding. This is called twisted force. The unwinding makes the spring rate irregular. By allowing the spring to smoothly rotate around the perch during compression, the spring rate will return to normal. Thrust sheets also help dampening and rebound of struts too. Thrust sheet?s bearing action allowing the rotation of a spring allow the load on the spring to be more evenly Distributed which reduces lateral shock shaft load. Increased lateral load on shock shafts cause a reduction in the struts ability to rely on valves for dampening force.

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

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

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

Optional Parts:

• Vorshlag camber plates (these are required for 5200 & 5300 series dampers - this strut model uses a 16mm OD upper strut shaft in front, which is larger than the OEM upper strut mount is made to accept) with integral radial bearing upper spring perches.
• The cost is $439 for camber plates