The Competition Clutch Stage 2 Street Series 2100 Clutch Kits provide up to 80% increase in torque capacity and is properly suited for aggressive street use and moderate track use. The Brass Plus material with its alloy backing matched to a performance pressure plate will provide smooth engagement and extended life. The 2100 Series kits include a Competition Clutch performance pressure plate, a high torque sprung disc with anti-burst steel backed Brass Plus facings, throw out bearing (where applicable), pilot bearing/bushing (where applicable), and alignment tool.Smooth Engagement.INFINITI: G35 03 07 3.5 L Engine, Nissan: 350Z 03 06 3.5 L EngineProperly Suited for Aggressive Street Use and Moderate Track Use.High Torque Sprung Steel Backed Disc.Brass Plus Facings.Smooth Engagement.