E-bike chain and drivetrain replacement at Wilson's starts from $45, derailleur and hanger alignment from $40, and cassette, freewheel or chainring replacement from $55, parts and labor included. A chain that skips, slips, falls off or grinds can come from the chain, the sprockets, the derailleur, the hanger or the crank, so our technicians check the whole drivetrain before quoting. A simple inspection is always free, on any brand, wherever you bought it.
If the chain jumps or drops under power, the derailleur is bent toward the wheel, the cranks move side to side or the pedals suddenly give way, stop riding. A bent derailleur can catch in the spokes and lock the rear wheel, and a chain that slips under motor power can throw you off the pedals. Walk the e-bike to us or bring it in by car.
How much does e-bike drivetrain repair cost?
| Job | From |
|---|---|
| Simple inspection (any brand, any issue) | Free |
| Full diagnosis, with disassembly or test equipment | $30, waived on repairs over $100 |
| Chain and drivetrain replacement | $45 |
| Derailleur and hanger alignment | $40 |
| Cassette, freewheel and chainring | $55 |
| Bottom bracket and crank service | $35 |
| Pedal assist and torque sensor | $35 |
| Speed sensor and magnet | $35 |
| Wheel truing and spoke replacement | $100 |
| Motor repair (hub and mid-drive) | $100 |
| Mid-drive motor replacement | $300 |
| Crash damage repair | $30 |
| Water and salt damage | $50 |
| Winter cleanup and storage prep | $30 |
| Tune-up and safety check | $50 |
Every price is a starting price that includes parts and labor; the final price depends on your e-bike and the part it needs. The same price list runs at every Wilson's shop. See the full list on our repair service page.
Why do e-bike chains wear out faster?
An e-bike drivetrain does more work than a pedal bicycle's. The motor adds torque, the e-bike itself is heavier, and most riders cover more miles, often in every kind of weather. Delivery riders put far more miles on a drivetrain than most. Road grit, rain and winter salt speed it up further.
The chain, the rear sprockets and the chainring wear together. A worn chain stretches and starts to wear the teeth of the sprockets; once the teeth are worn, a new chain on old sprockets can skip. That is why we look at all three before quoting, and tell you whether the chain alone will fix it.
Hub motor or mid-drive: why it matters for repair
- Hub motor e-bikes have the motor in the front or rear wheel. The chain carries your pedalling, and the motor drives the wheel directly. If the chain fails, a throttle-equipped hub motor e-bike may still move on the motor alone.
- Mid-drive e-bikes have the motor at the cranks. Motor power runs through the chain, the cassette and the chainring, so these parts carry much more load and wear sooner. Mid-drive motor repair starts from $100, and replacement from $300.
We check which system your e-bike has, and fit parts made for that load.
Why does my e-bike chain skip or slip?
A chain that jumps forward under pedal or motor power is the most common drivetrain fault we see. What we check, in order: chain wear, the teeth on the cassette or freewheel and the chainring, a stiff link, the derailleur hanger (bent hangers are common after a fall or after the e-bike is knocked over at a rack), and the derailleur's alignment. Chain and drivetrain replacement starts from $45; cassette, freewheel or chainring from $55.
Why does my e-bike chain keep falling off?
A chain that drops off the front chainring or the rear sprockets usually points to a bent hanger or derailleur, a derailleur out of alignment, a worn or bent chainring, or a chain that has stretched too far. On single-speed e-bikes it is often chain tension or a loose rear wheel. We find which it is and price the repair before any work starts.
Why won't my e-bike shift gears?
Gears that won't change, change late or shift on their own usually come from a bent derailleur hanger, a stretched or frayed shift cable, a damaged shifter or a derailleur knocked out of line. We check the hanger and the derailleur first, then the cable and the shifter. Derailleur and hanger alignment starts from $40.
Why is my e-bike drivetrain grinding or clicking?
Grinding while you pedal usually means a worn chain running on worn teeth, a dry or dirty drivetrain, or a derailleur rubbing the chain. A click once per pedal turn often points to the bottom bracket, a pedal or a crank. A click that follows the rear wheel can be the freewheel or the hub. We ride it, listen and check each part before quoting. Bottom bracket and crank service starts from $35.
Why do my pedals spin but the e-bike doesn't move?
When the pedals turn freely with no drive, what we usually find is a worn freewheel or cassette body, a broken chain, or a chainring that has come loose from the crank. On some mid-drive systems it can be inside the motor. We check the freewheel, the hub and the chain first, then the motor. Cassette and freewheel replacement starts from $55.
Why does my pedal assist cut out or come in late?
Pedal assist depends on sensors that tell the controller you are pedalling. When assist drops out, surges or comes in late, we check the pedal assist or torque sensor, the speed sensor and its wheel magnet, and the wiring to the controller. Both sensor repairs start from $35. If the display shows a code, the error code fix starts from $35.
My e-bike fell over and now the gears are wrong. What happens now?
A fall on the drivetrain side, or a knock at a rack, usually bends the derailleur hanger, and sometimes the derailleur itself. We realign or replace the hanger, check the derailleur, and look at the rear wheel and spokes in case the derailleur touched them. Derailleur and hanger alignment starts from $40, wheel truing and spoke replacement from $100, and crash damage repair from $30.
Single-speed and fat tire e-bikes
Many fat tire and delivery e-bikes have one gear and no derailleur. The chain, freewheel and chainring still wear, and chain tension matters more because nothing takes up the slack. The same prices apply.
Which e-bikes do we repair?
Any brand, wherever you bought it: Rad Power, Aventon, Lectric, Super73, Juiced, Ride1Up, Hiboy, KuKirin, Segway, AOTOS and many more. Drivetrain parts differ in chain width, sprocket count and freewheel type, so we fit parts matched to your e-bike as part of the repair. See e-bike repair and how much e-bike repair costs.
Where can I get my e-bike chain repaired?
At any Wilson's shop. Express service runs at every shop, and delivery riders get priority at all of them.
- New York City: Flushing, Elmhurst, Brooklyn and Long Island City
- California: San Francisco
- Florida: Miami, walk-ins
Walk in, no appointment needed, or call (516) 300-0944. To plan ahead at the New York and San Francisco shops, book a repair online.
Frequently asked questions
How much does it cost to replace an e-bike chain?
Chain and drivetrain replacement starts from $45, parts and labor included. If the cassette, freewheel or chainring is worn too, those start from $55.
How much does e-bike derailleur repair cost?
Derailleur and hanger alignment starts from $40. A derailleur that is damaged beyond alignment is replaced, and we price the part before any work.
Is it safe to ride an e-bike with a skipping chain?
No. A chain that slips under motor power can throw your foot off the pedal, and a bent derailleur can catch in the spokes. Stop riding and bring it in.
Do e-bikes need special chains?
Many e-bikes use chains and sprockets made to handle motor torque, especially mid-drive models. We match the chain to your e-bike's drivetrain and motor.
Is the chain covered by the warranty?
A part that fails from a manufacturing defect can be covered; normal wear, crashes and misuse are excluded. See our warranty policy.
Is the inspection free?
A simple inspection, where we look it over and tell you what we find, is always free. If a fault needs disassembly or test equipment, the full diagnosis is $30, and it's waived if your repair comes to more than $100.
Prices are Wilson's starting prices as of November 2026, parts and labor included. More repair guides: brake repair, tire repair, motor repair, e-bike battery replacement and all repairs.
