PSI Now Offering AST Suspension – Kits In Stock

AST Suspension Logo

We are pleased to announce that we are now stocking the full AST Suspension line up!

AST 1- Way 5100 Series (Rebound Adjustable)
AST 2-Way 5200 Series (Rebound and Compression Adjustable, with a remote reservoir)
AST 3-Way 5300 Series (Rebound, Low & High Speed Compression Adjustable, with a remote reservoir)
AST Lowering Springs

MOST BMW APPLICATIONS AVAILABLE!

AST Suspension is famous for its inverted technology on their flagship 5000 series dampers. Using a 45mm inverted piston or cartridge design increases damper strength in all directions, optimizing cornering and braking forces under any condition. Proven during countless competitions around the world, their design provides an ultra-strong strut and a low frictional resistance.

AST 1-Way 5100 Series (Rebound Adjustable)

Floating piston design with high pressure nitrogen means no cavitation around the piston.
14mm diameter internal shaft.
44.5 mm diameter shaft struts, inverted.
Steel cylinder body shocks, inverted.
High end, track ready suspension.
Rebound adjustable (”Singles”).
Low friction seal.
Adjuster knobs permanently mounted on the dampers.
Rubber bushings for ”eye” shock mounts.
Optional spherical top mounts.
Optional DLC Coated shafts.
Optional DDP piston (double digressive).
Rebuildable.
Optional custom valving.

AST 2-Way 5200 Series (Rebound and Compression Adjustable, with a remote reservoir)

BENEFITS:

High end, track ready suspension that is totally streetable
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
New low friction seal on all AST dampers
Spherical lower ‘’eye’’ shock mounts
Reservoir with hose or piggyback
Spherical upper shock mount assemblies
Synthetic hydraulic fluid
Optional DLC Coated shafts
Optional DDP piston (double digressive)

AST 3-Way 5300 Series (Rebound, Low & High Speed Compression Adjustable, with a remote reservoir)

High end, track ready suspension.
Rebound, Low & Hi Speed Compression Adjustable (‘Triples’), with a remote reservoir.
Remote reservoirs allow additional travel, heat dissipation and oil/nitrogen gas capacity.
44.5mm diameter shaft struts are inverted and offer exceptional strength, which in turn reduces geometry change under corner and braking manoeuvres.
Aluminum cylinder, threaded body shocks, factory mounting style.
New low friction seal on all AST dampers.
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 DLC Coated 44,5mm inverted shafts.
Optional DDP piston (double digressive).
Fully serviceable and rebuildable.
Revalvable for specific characteristics.

AST Lowering Springs

AST Lowering Springs are manufactured from a premium high tensile chromium-silicone wire which is handpicked by AST engineers for its quality and metal consistency.

Each spring is cold wound and then heat treated to increase hardness and reduce internal stresses present after winding. Each spring is then individually shot peened, phosphate treated and then powder coated to outlast even the life of the vehicle.

Progressive rates on most vehicles
EDC Compatible (if applicable to vehicle)
Each spring is blocked and computer tested prior to shipping, which reduces any settling once installed on the vehicle
Most of our spring applications are TUV Certified and certificates can be provided upon request