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Email us with your order number within 30 days of delivery and we will send a prepaid returns label. Refunds go back to your original payment method.
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Muc-Off Bio Drivetrain Cleaner 500ml combined with the X-3 Dirty Chain Machine is a complete kit that removes grease, oil and grime from bike chains, cassettes and derailleurs quickly while remaining biodegradable and component-safe.
Keep your drivetrain running smoothly with a purpose-built cleaning system: a fast-acting, eco-conscious 500ml Bio Drivetrain Cleaner plus the X-3 Dirty Chain Machine, which uses 120 contact points to scrub every link. The cleaner is formulated to break down oil, wax and road grime without harming metal, plastics, rubbers or seals, and the X-3 houses a refillable top reservoir and a sealed lower chamber to trap dirty fluid. Together they make chain maintenance faster, more effective, and less messy than manual brushing or spray-only methods.
The X-3 uses rotating brush wheels and abrasive cleaning teeth positioned around the chain, creating multiple angles of contact as you spin the cranks. This mechanical action dislodges embedded dirt and cleans the rollers and inner link surfaces that a single brush often misses.
This biodegradable degreaser is formulated to remove contaminants while minimizing harm to common bike materials and the wider environment. It's safe to use on metal, plastic, rubber and seals when applied as directed, and it breaks down faster than many solvent-based cleaners.
Set the X-3 on your chain with the lower chamber closed, fill the top reservoir with the Bio Drivetrain Cleaner (or use the included 75ml sample), then slowly rotate the cranks while pressing the release button to dispense fluid. Allow several revolutions so brushes and teeth scrub each link, then remove the machine, rinse, and dry the chain before applying lubricant.
The X-3 is designed for standard bicycle chains used on road, MTB and gravel bikes; its geometry and brushes are not compatible with BMX or track-specific chains. Always verify fit before use to avoid damage or ineffective cleaning.
Who is this for? Cyclists who want a quick, professional-level drivetrain clean without harsh solvents will benefit most from this bundle. It suits regular commuters who need low-maintenance upkeep, performance riders chasing smoother shifting and longer chain life, and home mechanics who prefer a tidy, efficient cleaning workflow. If you ride in wet, muddy or salty conditions frequently, this kit helps reduce wear and keep gear changes precise.
Aliphatic hydrocarbons (>30%), nonionic surfactants (<5%), parfum, butoxyethanol, cocamide DEA, colorant
Q: Can I use the Bio Drivetrain Cleaner on my cassette and derailleur?
A: Yes—it's safe on cassettes and mech plates when rinsed off after cleaning; avoid prolonged contact with painted surfaces.
Q: How often should I use the X-3 Dirty Chain Machine?
A: Use it whenever performance drops or visible grime builds up; many riders clean every few weeks or after particularly wet/muddy rides.
Delivery: free and tracked to addresses across the UK, with no minimum spend. We email your tracking link as soon as your order is dispatched; timings are on our delivery page.
Returns: 30 days from delivery to return an unused item in its original packaging free of charge, with a prepaid label. This is on top of your 14-day legal right to cancel, and your Consumer Rights Act protections for faulty goods.
Damaged or wrong item? Email us a photo at sportium.co.uk@gmail.com and we will replace or refund it.
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