If you only do one thing to maintain your Brompton, lube the chain. This is the one we recommend. Why Squirt Squirt is a wax-based chain lube — not an oil. That means it doesn't attract dirt and grime the way traditional lubricants do. Your chain stays cleaner for longer, your drivetrain runs quieter, and you spend less time wiping down greasy components. It's the lube a lot of experienced cyclists swear by, and it works just as well on a Brompton as on a road bike. One bottle lasts months of regular commuting. How it works Squirt goes on as a liquid and dries to a clean wax coating. It penetrates into the chain links, reduces friction, and protects against wear and corrosion. The formula includes PTFE for extra anti-wear performance. Works in all weather — wet or dry. No need to switch between different lubes for different conditions. What you can use it on Primarily designed for your chain, but it also works well on brake cables, gear levers, pivots, and any other moving parts on your bike. One bottle covers everything. Clean & green Squirt is biodegradable and solvent-free. No harsh chemicals, no strong smell. You can apply it indoors without any issues — handy when your Brompton lives in the hallway. Not sure how to lube your Brompton chain? Send us a message — we're happy to walk you through it. Specs Brand Squirt Type Wax & water emulsion Volume 120 ml Additive PTFE (anti-wear) Conditions All weather (wet & dry) Use Chain, cables, levers, pivots Environmental Biodegradable, solvent-free