Godspeed Porsche 911 RWD (997) 2005-12 MAXX Coilovers Engine Tuning Standard 17mm or 19mm sockets

Standard 17mm or 19mm sockets work depending on the nut's hex size

Traction control

High Sierra 1979 - 1982 GMC K3500 Sierra Grande 1987 - 1989 GMC R3500 Sierra Classic

Mounting hardware is not included — you'll use your factory fastener points

ABS construction handles the abuse of heavy hauling and towing

Godspeed Porsche 911 RWD (997) 2005-12 MAXX Coilovers Engine Tuning Standard 17mm or 19mm socketsSpecial Notes Prior to installation, verify all hardware and properly tighten and spring preload is set to 5 10mm(1 4 3 8in). Our technical department is available to answer any other questions. Damping Levels 40 Level Height Adjustment Yes Spring Rate(Front) 6 kg mm (336 lbs inch) Spring Rate(Rear) 12 kg mm (672 lbs inch) Spring Length(Front) 150 mm Spring Length(Rear) 180 mm Front Top Mount Yes, Pillow Ball w Camber Plate Rear Top Mount Yes,