This move has made particular sense for off-road bikes

chain tool

This form fit top is designed with wind-cheating features and modern touches

This is Pulse of Speed

and something to help them perform better

PARK TOOL GSC-1 GearClean Brush sale This move has made particularThe GSC 1 is specially designed to free your bicycle drivetrain from muck and grime. The comfortable handle features tough bristles clean the derailleur and cassette, and a contoured toothed end to reach dirt deep between the gears. Saves wear and tear on your chain and cassette. Also works great on derailleur pulleys, brakes, or other places where dirt collects.