This drivetrain cleaner from Muc-Off is formulated to break down built-up grease, oil, and road grime on chains, cassettes, chainrings, and derailleurs. The biodegradable formula penetrates tight spaces to lift contaminants without harsh solvents, making it suitable for regular maintenance on road, gravel, and mountain bikes. Designed for use with brushes or chain cleaning tools, it helps restore smooth drivetrain operation and prepares components for fresh lubrication.