How to Clean and Lube a Mountain Bike Chain
The chain is the cheapest part of your drivetrain and the one that wears the expensive parts out. Ten minutes of care every few rides pays for itself.
A worn chain quietly grinds down your cassette and chainrings, and replacing a 20-dollar chain is far cheaper than replacing a drivetrain. The good news is that chain care is one of the simplest jobs on a bike.
Why the chain matters so much
Grit in the rollers acts like grinding paste on every tooth it touches. A chain that is kept clean and correctly lubricated can last several times longer, and it protects the parts around it. If you do one maintenance job regularly, make it this one.
Clean it properly
Wipe the chain with a rag after every ride, then deep clean every few rides or after a wet, muddy one. A chain-cleaning tool with brushes and a degreaser is the least fuss; a brush and a bucket works too. Work along the chain, backpedal to move every link past the brushes, then wipe the excess off with a rag.
- After every ride: wipe and add a drop of lube per link.
- After a wet ride: dry the chain first, then lube; water rusts a bare chain overnight.
- Every few rides: degrease, brush, wipe and re-lube.
A clean chain is a quiet chain. If yours rattles, it is either dry or worn.
Dry it before you lube it
Lubricant does not mix with water or degreaser. Dry the chain with a rag and let it sit a few minutes before applying lube, or you trap moisture under the oil. This is the step most riders skip, and it is why their chain rusts.
Choose and apply lube
Dry lubes attract less grit and suit dry, dusty trails; wet lubes last longer in rain and mud but pick up more dirt. Apply one drop per link while backpedalling, let it sit, then wipe off the excess so the outside of the chain is dry. Excess lube just collects grit.
Check for wear
Use a chain checker or measure with a ruler: on a standard chain, 12 links should measure 12 inches, and a stretch of about 1/16 inch (0.5 percent) means it is time to replace. Replacing early saves the cassette; replacing late costs you the whole drivetrain.
Quick-release links
Modern chains often use a quick link rather than a rivet pin. Learn to open and close yours with the correct pliers, carry a spare link of the same speed on the trail, and fit the link the right way round if the manufacturer marks it.
Ten careful minutes every few rides, and a quiet, long-lived drivetrain is yours.
Frequently asked questions
How often should I clean my bike chain?
Wipe it after every ride and add a drop of lube per link. Degrease and deep clean every few rides, or after any wet and muddy ride.
Should I use dry or wet chain lube?
Dry lube attracts less grit and suits dry, dusty trails. Wet lube lasts longer in rain and mud but collects more dirt, so wipe the outside dry after applying.
How do I know when to replace my chain?
Use a chain checker, or measure 12 links: a standard chain should be 12 inches, and about 1/16 inch of stretch means replace it to save the cassette.
