PARK TOOL CG-2. 4 CHAIN GANG CLEANING KITBACK ON THE CHAIN GANGI found a picture of you, oh oh oh oh. You cleaned my bike at night. Keeping your bike clean is the easiest way to keep your bike running properly for years to come. Dirt will build-up on your moving parts and cause premature wear. This can easily be cleaned off with the Park Tool CG-2. 4 Chain Gang Cleaning Kit. The kit contains everything needed to quickly and easily clean the chain, cogs, and chainrings. It comes with a Park Tool CM-5. 3 Cyclone Chain Scrubber, GSC-1 Gear Clean Brush, and an 8 oz. bottle of Bio Chain Brite. Features Comes with everything to clean your chain, cogs, and chainrings The kit includes a Park Tool CM-5. 3 Cyclone Chain Scrubber, GSC-1 Gear Clean Brush, and an 8 oz. bottle of Bio Chain Brite Manufacturer's part number: CG-2. 4UPC: 763477001733 | Park Tool | Cg-2. 4 Chain Gang Cleaning Kit Also Includes Gsc-1 Brush And Cb-4 Cleaner | Rubber