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AST 4100 Monotube Coilovers w/Springs BMW E46 3 Series non M3 1998-2005


AST Suspension

Model #ACS-B1101S

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AST 4100 Monotube Coilovers BMW E46 3 Series non M3 98-05

AST coilovers are Monotube, high pressure nitrogen shock absorbers. Why do you care? Most other products on the Market are twin tube designs and are not pressurized. Monotubes offer the biggest pistons for More control. Gas pressurization Means the oil will never cavitate around the piston. This is particularly important in environments where the vehicle Makes rapid changes in direction such as autocross and road racing.


  • Springs Included
  • 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
  • Special Order Kits are shipped directly from the Netherlands.
  • ETA is approximately 6-8 weeks

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