The Boss goes straight on to grimy chains, cassettes and jockey wheels and issues filth its P45. It's designed for drivetrains but it’ll work on any bits on your bike that are properly caked with grease and grime.

Boss is designed to be a more powerful cleaner than Dirt Juice Super, our classic cleaner, and brewed for the grottiest of grime.

Use it in combo with our Dirty Little Scrubber Chain Cleaning tool or paint it on direct with a brush, either works!