AST Suspension 5300 Series Coilovers - 2014+ BMW M4 3.0 TwinTurbo (F82 Non LCI 3 Bolt) Coupe 48 Kg/mm Spring Rate -

48 Kg/mm Spring Rate - Rear 6

2001 Audi S4 Quattro

1996 Toyota Corolla Base (E100/E110/E120)

2019 Honda Civic Hatchback (FK7)

Add to that engine bat contaminants to your 2008-2017 Subaru Impreza WRX Base (GE/GH/GR/GV/GP/GJ) such as oil leaks that also help to degrade the performance of steering rack mount bushings

AST Suspension 5300 Series Coilovers - 2014+ BMW M4 3.0 TwinTurbo (F82 Non LCI 3 Bolt) Coupe 48 Kg/mm Spring Rate -For the best performance on the track, AST Suspension designed the Competition 3 way adjustable series to fit the 2014+ BMW M4 3. 0 TwinTurbo (F82 Non LCI 3 Bolt) The 5300 Series shock absorbers are rebound adjustable in 12 positions on the strut. The high speed compression is adjustable in 12 positions and the low speed compression is adjustable in 14 positions. Both compression adjustments are made using an external canister. All adjusters work