Manley Performance started in 1966 with products supporting many famous names like Don Garlits, Bo Laws, and Joe Mondello. Fast forward to today, and Manley has continued to evolve their manufacturing to be an OE Supplier as well as a leader in performance valve technology. Developing industry-leading products for a wide range of motorsports including Domestic Drag Racing, Sport Compact and Diesel applications, Manley offers Valvetrain Components, Connecting Rods, Pistons, and Crankshafts.