MOOSE RACING Piston Kit - 53.95 mm - YZ 125 MSE24570B Water Pump Most systems equipped with a

Most systems equipped with a RC-4 Resonance Chamber for reduced sound output

Save space on your handlebars with this clean setup

Just what your Ninja needs to clean up the tail section from Gravesport

2021-2022 Yamaha YZ 250 FX - - 2020-2022 Yamaha WR 250 F - - 2019-2022 Yamaha YZ 450 FX - - 2019-2022 Yamaha YZ 250 F - - 2019-2022 Yamaha WR 450 F - - 2018-2022 Yamaha YZ 450 F

MOOSE RACING Piston Kit - 53.95 mm - YZ 125 MSE24570B Water Pump Most systems equipped with aMoose Racing pistons feature X style forgings and fully boxed style (race pistons) forgings for ultimate strength, minimizing friction, durability, power, and weight reduction Pro Race Piston increases the durability by reducing the stresses in the pin bore area Pro Race Piston allows the pin to flex while removing stress from the area Full radius dome designs maximize quench while eliminating hot spots that promote detonation Internal bracing