Action Clutch Stage 4 unsprung MIBA Ceramic clutch kit for Nissan Altima (2007–2012) 2.5L (QR25DE) pairs an unsprung ceramic disc (4- or 6-puck) with a heavy-duty single-diaphragm pressure plate and reinforced drive straps for rapid on/off engagement. Rated around 170% increased holding capacity over stock, this kit targets race and dedicated track use; expect quicker engagement and some chatter until break-in.
Action Clutch 07-12 Nissan Altima 2.5L (QR25DE) Stage 4 Clutch Kit (1MD) w/Slave Cylinder