AST 4200 Monotube Coilovers BMW E30 3 Series incl. M3 82-94 Rebound and Compression Adjustable, without reservoirs ("Internal Doubles")22mm diameter shaft struts, non-invertedAluminum threaded cylinder shocks, non-invertedSpherical lower "eye" shock mountsSynthetic hydraulic fluidDesigned for racing classes that require any adjustment be internal ("no reservoirs")
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.
Available in GT, GTS or GTR style speing rates.
The GT package is 500# / in Front, 650# / in rearThe GTS package is 600# / in Front, 750# / in rearThe GTR package is 700# / in Front, 900# / in rear
Please Select your Spring Rates Below.
Note:Photo may differ from actual product.