A dirty drivetrain causes poor shifting and unnecessary wear to expensive parts. The ChainGang contains everything needed to quickly and easily clean the chain, freewheel cogs, and chainrings. The ChainGang includes a CM-5 Cyclone Chain Scrubber, a GSC-1 GearClean Brush, and an 8 ounce (237 ml) bottle of CB-2 Citrus ChainBrite. The CG-2 works on all derailleur bikes and most 3 speed and coaster brake bikes.