Motor Wheel
How it works
Available for any sized bike
The Swytch Kit can convert almost every bike, with 13 wheel sizes to pick from. If you don’t see your wheel size you can select our
hub-only option and get a wheel built up at your nearest Swytch partner store.
MAX Kits come in all front wheel sizes. GO Kits are compatible with 26″ to 29″ wheels. MAX+, MAX++ have the option of rear wheels.
Common sizes included for bikes:
Mountain
26", 28", 29", 30"
Hybrid
26", 28", 29", 30"
Road
26", 28", 29", 30"
Folding
16"
Single Speed
20", 24", 26", 28", 29", 30"
Step-over
26", 27", 27.5", 29"
BEHIND THE SCENES
Made in the UK!
We custom-build each motor wheel at our wheel building facility in Norwich, UK. This allows us to offer ANY wheel size, made to order to match your bike.
Powerful 250W Motor
Enough power to push you up almost any hill, whilst still being road legal.
Disc Brake Compatible
Our motor wheels feature screw holes that allow you to easily attach your existing disc brake.
Folding Bike Compatible
We build the motor wheel to match your bike!
Rear Motor Wheel Option
Available for MAX+ Kits in select sizes with a thru-axle version.
Black or Silver Options
Upgrade to our black motor option! (AIR/MAX/MAX+ Kits Only)
Step 1
Find your wheel size
Wheel sizes can be confusing. Whatever bike you have, our video explains how to quickly find the wheel size.
Ways to check
Using tyre markings
Using a ruler
Checking online
How to confirm that my bike has a...
28”
Measurement method 1 Size markings
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 28” wheel: 622, 700c, 28, 29er.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 27.5” wheel: 584, 27.5, 650.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 27” wheel: 630, 27, 650.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 26” wheel: 590, 26
Please note there are two 26″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 26” wheel: 599, 26
Please note there are two 26″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 24” wheel: 507, 24.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 22” wheel: 457, 22.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 20” wheel: 451, 20.
Please note there are two 20″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 20” wheel: 406, 20.
Please note there are two 20″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 18” wheel: 355, 18.
ETRTO
French
English
If your bike tyre has any of the following numbers on it (anywhere on the tyre), then it’s a 16” wheel: 349, 16.
ETRTO
French
English
Measurement method 2 Ruler
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 711.2mm then it is a 28” wheel.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 698.5mm then it is a 27.5” wheel.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 685.8mm then it is a 27” wheel.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 660.4mm then it is a 26” wheel.
Please note there are two 26″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 660.4mm then it is a 26” wheel.
Please note there are two 26″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 660.4mm then it is a 24” wheel.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 558.8mm then it is a 22” wheel.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 508mm then it is a 20” wheel.
Please note there are two 20″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 508mm then it is a 20” wheel.
Please note there are two 20″ wheels, both with different ETRTO numbers, please check you have the correct ETRTO in this case.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 508mm then it is a 18” wheel.
Measure the diameter of the wheel from edge to edge of the metal rim. If the measurement is 508mm then it is a 16” wheel.
Step 2
Find your axle size
You can identify what axle size you need by measuring the gap with a ruler. Note if you have a folding bike, the narrow motor wheels all come with an 8mm axle size.
What options are there?
What do I need?
How do I measure?
What about quick release forks?
10mm
Most common / standard
9mm
Quick release forks
8mm
Most Folding Bikes
Frequently Asked Questions
Got a question?
Category
What’s the riding experience like with the rear wheel?
Riding with a rear-wheel motor feels more natural than with a front-wheel motor, as the rear motor pushes you forward, similar to pedaling, while a front motor pulls you along.
What tools do I need to fit the rear motor wheel?
To fit a rear wheel, you’ll need a few tools. If you’re installing a solid axle rear wheel motor, an adjustable spanner is required. For a thru-axle, you’ll only need the tool you typically use to remove the axle, depending on your bike. You’ll also need a set of Allen keys or Torx drivers to replace the disc rotor, along with a cassette tool and chain whip to remove and replace the cassette. All of which you can find in our tool kit, available on our order portal when you make a pre-order or in our online shop.
Is riding with a rear motor wheel more powerful?
Riding with a rear-wheel motor doesn’t offer more power compared to a front-wheel motor, as both are capped at 250W and 40Nm, which limits the overall power and speed.
What motor wheel options are available for MAX+?
28″/700C/29er, 27.5″, and 26″ sizes are available, with options for both standard fitting and thru axle configurations. Please note this is only available for MAX+ kits.
Which tyres are not compatible?
The Swytch motor wheel is designed to accommodate tire widths ranging from 1.1 to 2.5 inches (28 to 64 mm) only, which excludes fat tyres and very narrow road tires. Please purchase a tyre that is compatible for the Swytch motor wheel.
Is there any drag from the motor wheel?
The Swytch Kit features an advanced brushless geared motor with virtually zero drag when the power is off. This means that if you remove the power pack or turn it off, the bike operates just like a regular, non-electric bike, providing a smooth and efficient ride with virtually zero added resistance.
How will I pick my wheel size?
We have detailed articles available to help you determine the correct wheel size for your bike on our help centre.
What is the motor power output of the Swytch Kit?
Our motor wheel has a rated power of 250W and a maximum torque of 40 Nm.
Can I use the Swytch Kit on a bike with disc brakes?
The Swytch Kit is 100% compatible with disc brakes, including both hydraulic and cable systems. All standard Swytch motors feature 6 screws on the outer part, allowing you to securely fit your existing disc brake to the motor.
