All Maintenance Tasks · Seasonal
Deep Clean and Degrease
A wipe every week keeps the surface clean, but the drivetrain still accumulates a hard black paste in the places a rag cannot reach: between cassette sprockets, inside the derailleur cage, on the inner face of the chainring. Once or twice a year that has to come off completely, or the next lubricant just floats on top of it.
Interval
Seasonal
Four times a year, at the change of weather
Time on the job
1 hour
Once you have done it a few times.
You or a shop
Anyone
The stop signs further down are the real answer.
Applies toRoadMTBHybridE-bikeKids
How often, really
Twice a year is enough for most riders: once in spring to get winter off the bike, once in fall before the wet season starts. Ride gravel or trails all summer and you may want a third in between. It is also the right response to any single filthy ride, the kind that comes home with the drivetrain packed solid.
The interval on this page is Seasonal. Four times a year, at the change of weather.
What you need
- Two buckets, bike soap or dish soap
- A stiff drivetrain brush and a soft frame brush
- Degreaser
- Isopropyl alcohol for rotors
- Chain lubricant and clean rags
Doing the job
Set up so water runs away from the bike
Work outdoors or somewhere with a drain. You want two buckets: one with warm water and bike-specific soap or dish soap, one with clean rinse water. If the bike is electric, take the battery off first, cover the mount and the display, and keep the hose on a gentle flow or leave it in favor of a cloth.
Degrease the drivetrain first, while the bike is dry
Degreaser works better on a dry chain than on a wet one. Brush degreaser into the chain with a stiff brush, work it between the cassette sprockets with a narrow brush or a rag pulled through like dental floss, and get into both faces of the chainring and around the jockey wheels. Give it the dwell time the product asks for.
Keep every drop of it away from the brakes
This is the one hard rule of the job. Degreaser on a disc rotor or a brake pad contaminates the pad permanently. Point the brush away from the caliper, do not spray, and if the bike has disc brakes, consider taking the wheels out and covering the rotors. Contaminated pads get replaced; there is no cleaning them back.
Wash the rest of the bike from the top down
Soapy water and a soft brush, starting at the bars and saddle and working down, so dirty water never runs over a surface you have already cleaned. Use a separate brush for the drivetrain and never let it touch the paint, because the grit it carries scratches.
Rinse gently and never under pressure
A low-pressure hose or a watering can is right. Never a pressure washer and never a jet aimed at a hub, the bottom bracket, the headset, a suspension seal or, on an e-bike, anything electrical. Driven water gets past seals that handle rain without complaint, and once it is inside a bearing it stays there.
Dry it, then put the lubricant back
Towel the frame and rims, then take the bike for a short ride or turn the cranks to fling water out of the chain. A degreased chain is completely dry inside and will rust within a day, so lubricate it before the bike goes away, then wipe the outside off properly.
Finish with an inspection while everything is visible
A clean bike is the only time you can see hairline cracks, worn braking surfaces, frayed cables and weeping bearing seals. Walk around it once with a light before you put it back. This is the real reason a deep clean is worth an hour twice a year.
Stop and take it to a shop
If any of this shows up while you work on deep clean and degrease, put the bike down and let a mechanic look at it. None of these are things to ride out and see how it goes.
- Degreaser, chain lubricant or soapy water has reached a disc rotor or a brake pad. Clean the rotor with isopropyl alcohol, replace contaminated pads, and test the brakes at walking pace before riding.
- A hub, bottom bracket or headset that feels gritty or notchy after the wash. Water has got into the bearing, and it needs service rather than another spin to dry it out.
- You find a crack, a crease, a deep gouge or a paint line in the frame, fork, bar or seatpost while the bike is clean. Stop there and have it inspected before the bike is ridden again.
- On an e-bike, any water sitting in a connector, in the battery mount, or behind the display. Do not power it up. Dry it thoroughly and, if you are unsure, take it to a dealer.
Where this usually goes wrong
- Reaching for a pressure washer because it is fast. It is the single most effective way to destroy the bearings on a bicycle.
- Using the same brush on the drivetrain and the frame, which grinds chain grit into the paint.
- Putting a degreased bike away wet and unlubricated, then finding an orange chain a day later.