AST - 4100 Monotube Coilover Struts & Shocks

The venerable 4000 Series damper stands as AST's entry level, adjustable damper. Using the same internal technology found in the 5000 Series competition sets, the 4000 Series creates near-budget level single adjustable and double adjustable dampers for the track and amateur road racing market. Hand built in Holland, these monotube, high pressure nitrogen shock absorbers are some of the finest on the market.

AST 4100 Features
- Monotube dampers that use 22mm shafts for struts and 14mm shafts for shocks
- Nitrogen charged to 175 psi for 22mm shaft shocks and 265 psi for 14mm shaft shocks
- Utilizes AST's Load Bearing Piston (LBP) for all strut designs (AST is the only coilover in this price range to use this feature)
- Steel bodied struts and shocks all use European KTL coating which is stronger and more weather resistant than powder coat or wet paint found on most shocks
- Utilizes design principles required for grueling TUV testing including withstanding 1 million cycles with 1100 pounds of side load on the strut
- Rebound-only adjustable (4100)
- Fully rebuildable and revalvable
- Shortened appropriately for lowered performance cars
- Valved for a comfortable, aggressive street ride that performs great at the track

Parts Included
- (2) Front AST 4100 Single Adjustable (12 adj, Rebound only) Monotube Struts
- (2) Rear AST 4100 Single Adjustable (12 adj, Rebound only) Monotube Shocks
- AST Front Spring Perches for 60mm springs and your OEM upper strut mounts (removed when bought with camber plates)
- AST rear height adjusters
- AST Tool Kit