Dirty drivetrains equal dirty shifting, and nobody wants that. Park Tool’s CB-4 is a biodegradable, plant-based degreaser that will help you get your drivetrain looking as good as new, and your shifting crisp and clean.
- Plant-based and biodegradable cleaner is easy on your bike’s parts, it is safe for carbon, alloy, steel, rubber, plastic, and more
- Works perfectly with the Park Tool CM-5.3 Chain Scrubber (sold separately), but can be put on a cloth or brush with great results
