MOOSE RACING Race Piston Kit MPX1110 M1.3™ Youth Boots O-ring seals on ID of

O-ring seals on ID of bearing for superior water and dirt exclusion

Removable rubber guard keeps mechanisms clean and operational

Prevent clutch slipping

These sport bike valve stems are sold in a pack of 2 and fit most Japanese OEM wheels

MOOSE RACING Race Piston Kit MPX1110 M1.3™ Youth Boots O-ring seals on ID ofMoose 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