Spirited weekend track drives do not have to sacrifice daily driving comfort or performance.  Designed for the performance enthusiast in mind, the RS-R Sports-I coilover system provides a comfortable ride for everyday use, yet is sufficient enough for those effervescent track days.
 
Part#: XSPIN134M
Compatibility: 2009+ Nissan 370Z
Chassis code: Z34
Preset Approximate Height From RS-R:
Front -15mm to -20mm (-0.6inch to – 0.8inch)
Rear -15mm to -20mm (-0.6inch to – 0.8inch)
Maximum Adjustment Ranges:
Front +25mm to -80mm (+1.0inch to -3.2inch)
Rear +5mm to -45mm (-0.2inch to -1.8inch)
Recommended Adjustments for Optimal Ride-ability:
Front +5mm to -45mm (-0.2inch to -1.8inch)
Rear +5mm to -4mm (-0.2inch to -1.8inch)
Spring Rates:
Front  8.00kg/mm
Rear  8.00kg/mm
Dampers are 36 way adjustable in the front and the rear. Warranty 1 Year / 12,000 miles from the day of purchase.