Springs - Front

595mm with 17in Wheels
608mm with 18in Wheels
620mm with 19in Wheels
From the Bottom of the Rim to the fender

575mm with 17in Wheels
588mm with 18in Wheels
600mm with 19in Wheels
From the Bottom of the Rim to the fender

560mm with 17in Wheels
573mm with 18in Wheels
585mm with 19in Wheels
From the Bottom of the Rim to the fender

20mm Drop Spring
640mm RTG with 19" Wheels
OE Coil Wrap Must be Re-Used
2008-2009 G8
Spring Rate: 162 lb/in

1.3" Drop Spring
657mm RTG with 20" Wheels
2010+ Camaro

1.2" Drop Spring (5.7L)
670mm RTG with 20" Wheels
2005+ LX and LC Cars
Spring Rate: 300 lb/in
Free Height: 300mm
Coils: 8
Height vs 7940: -37mm

0 Drop Spring (5.7L)
700mm RTG with 20in Wheels
2005+ LX and LC Cars
Spring Rate: 300 lb/in
Free Height: 330mm
Coils: 7.5
Height: Standard

Ride height is about 750mm with 20" wheels.
Measured from the bottom of the rim to the fender
Does not fit vehicle with electronic front strut