KG/MM DR21 SuperSport ($345USD)
F: 4.4 kg/mm
R: 3.6 kg/mm
Drop (F/R): (1.77" / 0.98")
KG/MM DR21 Racing ($364USD)
F: 6.6 kg/mm
R: 5.2 kg/mm
Drop (F/R): 2.16" / 1.57"
RS-R Heavy Duty Race ($250USD - $289USD)
F: 5.0 kg/mm
R: 4.5 kg/mm
Drop (F/R): 1.37" / 1.18"
Eibach ProKit ($225USD - $250USD)
F: 1.84~1.92 kg/mm
R: 2.3~2.4kg/mm
Drop (F/R): 1.8" / 1.6"
Eibach Sportline ($200USD - $225USD)
F: 1.92~2.0 kg/mm
R: 2.4~2.5 kg/mm
Drop (F/R): 2.2" / 2.1"
Tein S-Tech ($190USD - $200USD)
F: 3.2 kg/mm
R: 2.9 kg/mm
Drop (F/R): 1.5" / 1.2"
H&R Sport ($200USD - $250USD)
F: 2.0~2.08 kg/mm
R: 2.5~2.6 kg/mm
Drop (F/R): 1.3" / 1.3"
Whiteline Control ($200USD)
F: 2.8 kg/mm
R: 2.36~3.66 kg/mm
Drop (F/R): 1.75" / 1.75"
Where to buy Springs:
Mach 1 Motorsports ( http://www.mach1motorsports.ca )
BC Auto Design ( http://www.bcautodesign.com )
PDM Racing ( http://www.pdm-racing.com )
** Some figures may vary. Contact manufacturer for exact specs.