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Mere soapy water will leave you scrubbing to no avail, but douse your chain or greased-up components with the Park Tool CB-4 Bio Chain Brite Degreaser and you'll have 'em spick and span in no time. Specially formulated so as not to harm alloys, plastics, or rubber parts, the CB-4 Bio ChainBrite™ Degreaser is the perfect solution for cleaning up dirty chains and drivetrain components.
100% Biodegradable – Natural, plant-based degreaser formulated for use in the CM-5.2 Cyclone Chain Scrubber, CM-25 Professional Chain Scrubber, or as a general purpose degreaser.
Component Safe – Won't harm alloy, plastic, or rubber parts.
Instructions for Use – Use CB-4 full strength, do not dilute with water. Cover parts in solvent and scrub using a brush.