Sports*I Coilover System

The RS-R Sports*I coilover system is a hand-assembled monotube damper designed to enhance ride quality, performance, and comfort for the Infiniti G37 4DR (2007-2015). Constructed with quality and detail in mind, the coilovers feature laser-cut upper mounts, hand-welded lower brackets, and vehicle-specific valving, all assembled by hand. The system employs urethane bushings instead of bearings to minimize vibrations and noise during everyday use and suspension movements. For MacPherson type suspensions, RS-R incorporates roller bearings to prevent spring twist noise as the suspension rotates with the steering wheel. Providing up to 36-way adjustable damping for both compression and rebound, these coilovers allow drivers to tune the shocks to their specific needs and driving conditions. The system also offers refined camber tuning, with the option to add 1.5 degrees of camber on select vehicles by rotating the upper mount plate. Spring rates are set at 7.00kg/mm for the front and 6.00kg/mm for the rear. The preset approximate height adjustment is -30mm (-1.2 inches) for both front and rear, with maximum adjustment ranges from +30mm to -90mm in the front and -5mm to -55mm in the rear. Recommended adjustments for optimal rideability are -10mm to -60mm in the front and -5mm to -55mm in the rear.