Description
They ensure maximum performance with high-powered engines in situations of greater stress. Standard crankshafts improved balance and a lighter connecting rod.Built from race proven designs to Yamaha factory specifications.Chosen by the top race teams in all forms of racing including super cross, motocross, GNCC, superbike, and more.Maximizes HP and service life in Yamaha Dirt Bikes and offroad vehicles.Fits the following rides Yamaha YZ 85 - 2002/2017