How to look after a spin bike chain or belt

Know which drive you have

Most listings and manuals state the drive type. If not, look through the vents in the cover or remove it as the manual describes. A chain looks like a bicycle chain; a belt is usually black rubber with ribs on the inside. Our chain drive vs belt drive comparison explains the differences.

Note:Let the flywheel stop completely before removing covers. On a fixed-flywheel bike the pedals turn with the flywheel, so keep hands and clothing clear.

Caring for a chain

A chain needs cleaning and light oiling. Over-oiling attracts dust and makes a mess, so less is better.

1. 1

   Remove the chain cover as your manual describes.

2. 2

   Wipe the chain with a dry cloth while turning the pedals slowly backwards.

3. 3

   Apply a few drops of light chain oil to the inside of the chain while turning the pedals.

4. 4

   Turn the pedals for a minute to spread the oil.

5. 5

   Wipe off any excess from the outside of the chain.

6. 6

   Refit the cover and check it does not rub.

Checking chain tension

A chain should have a small amount of slack, so you can move it up and down slightly in the middle of its run. Too slack and it can slap the cover or jump; too tight and it wears and feels stiff.

Spin bikes adjust chain tension at the flywheel axle, usually with nuts on each side. Loosen and tighten them evenly so the flywheel stays straight. Follow the manual, as the method varies.

Caring for a belt

Belts need almost nothing. Wipe dust from the belt and pulleys when the cover is off, and look for cracks, fraying or missing ribs. Never oil a belt: oil softens rubber and makes it slip.

A belt that slips feels like a sudden loss of resistance under hard effort and may squeal. That usually means the tension needs adjusting. On many bikes this is done at the flywheel axle or with a tensioner pulley. Follow the manual. If the belt is glazed, cracked or stretched, replace it with the maker's part.

Noises and what they mean

Not every drive noise comes from the drive. Pedals, cranks and the bottom bracket can all click or knock. Our guide to exercise bike knocking noise covers those.

When to replace a chain or belt

Replace a chain if it has stiff links that do not free up after cleaning, heavy rust or if it keeps jumping after tension is set. Replace a belt if it has cracks, frayed edges, missing ribs or keeps slipping after adjustment.

Use the maker's part or one specified for your model. Belts and chains come in different lengths and profiles. If you are not confident replacing a drive, ask the maker's support or a local fitness equipment engineer.

See our best spin bikes →

A simple routine

For a chain bike, check and oil the chain every few weeks of regular use, or when it looks dry. For a belt bike, look at the belt every couple of months. On either, check the pedals and crank bolts at the same time.

If you are choosing a new bike and want minimal upkeep, look for a belt drive and magnetic resistance. Our best spin bikes under 500 guide lists several.

Frequently asked questions

What oil should I use on a spin bike chain? A light bicycle chain lubricant suits most chains. Check your manual for any specific advice.

Can I use WD-40 on a spin bike? Standard WD-40 is a cleaner and water displacer, not a long-lasting chain lubricant. Use a proper chain lube after cleaning.

Why does my belt drive spin bike squeak? A slipping or worn belt, or a squeak from the pedals or crank. Check belt tension and the pedal joints.

Do belt drive bikes ever need maintenance? Very little. Keep the belt clean and check it occasionally for wear and slipping.