The Ford 6R80 transmission is a strong longitudinally designed 6-speed transmission found in Mustangs, F-150s, Rangers, Transits, and many other Ford vehicles models. Common 6R80 issues include overheating, clutch slipping, harsh and erratic shifting. Raybestos Powertrain offers several aftermarket 6R80 solutions that include the use of GPZ friction material to increase clutch life and durability in high-stress driven vehicles. Additional friction and steel clutch plates are also available in our 6R80 GPZ Torqkits to increase performance.