This is a similar grate to the WR201 however it is less aggressive and gives 1-2 MPH higher top speed but does not have the same braking effect as the WR201. If you want top speed and usually ride in calmer/smoother...
NTN LLU Wheel Bearing - A highly efficient friction rubber seal for groove ball bearings but an inner and an outer lip in combination with a v-ground groove in the inner ring. Extremely good sealing effect against...