MXR-B3 is based on MXR-B2 coil-overs, which are also height adjustable. They are also made for street use, but the 24-level rebound damping control allows you the ability to perfectly dial in your coil-over setup. You will experience better ride quality in all road conditions. Application For Nissan 350Z Coupe 2003-2008 (Z33) RWD For Nissan 350Z Roadster/Convertible 2003-2008 (Z33) RWD For Nissan Skyline Coupe 2003-2007（V35) RWD For Infiniti G35 Coupe 2003-2007 (V35) RWD For Infiniti G35 Sedan 2003-2006 (V35) RWD Note: Not for AWD models. Specifications Height adjustable: Yes, lowering 25-75mm depending on the vehicle models Damping adjustable: Available, 24 levels of rebound damping force Spring Rate Rear: 7 kg/mm (392 lbs/in) Rear spring inner diameter: 70.5 mm Spring length Rear: 250 mm Rear top mount: Pillow ball Camber adjustable: Not available Spring Preload advised: 7-10 mm Package included 2x Rear coil-overs 2x C spanners Features 1. Lowered height adjustment from 25-75mm