Your All-in-One Drivetrain Cleaning Solution

A dirty drivetrain leads to poor shifting and accelerated wear on costly components. The Park Tool CG-2.4 Chain Gang Cleaning System includes everything you need to quickly and effectively clean your chain, cogs, and chainrings.

CM-5.3 Cyclone™ Chain Scrubber

Clean your bike chain quickly, easily, and without the mess of removal. The Park Tool CM-5.3 Cyclone Chain Scrubber features an extra-large solvent reservoir and four rotating brushes to deliver a deep, thorough clean inside and out. A built-in magnet captures grime and metal particles, preventing re-deposit on the chain, while a durable sponge minimizes drips for a cleaner workspace. Compatible with all bike-specific chains—from wide single-speed to narrow 12- and 13-speed—and equipped with a reversible handle for center drive e-bike use, the CM-5.3 makes chain maintenance simple and efficient.

CB-4 Bio ChainBrite

The Park Tool CB-4 Bio ChainBrite is a 100% biodegradable, plant-based degreaser designed for use with the CM-5.3 Cyclone Chain Scrubber, CM-25 Professional Chain Scrubber, or as a general-purpose cleaner with a brush. Safe for use on alloy, plastic, rubber, and carbon fiber, it effectively removes grime from chains, cassettes, chainrings, and pulleys—leaving components spotless and residue-free. Powerful yet eco-friendly, CB-4 restores drivetrain performance while keeping your workspace and the planet clean.

GSC-1 GearClean™ Brush

The Park Tool GSC-1 GearClean™ Brush is designed to strip away built-up grime from your bike’s drivetrain with ease. Its contoured, toothed end digs deep between gears, while tough nylon bristles scrub derailleurs, chains, and other hard-to-reach components. Perfect for cleaning cassettes, pulleys, and brakes, the GSC-1 helps reduce wear and keep your drivetrain running smoothly.

The CG-2.4 is compatible with nearly any bike including multi-speed, single-speed, and e-bikes.