Wheelchair Spoke Guards Size Guide
Find your correct spoke protectors size in the chart below. If you are unsure which size fits your wheelchair, use our step-by-step measuring guide at the bottom of this page. The dimensions listed are based on the outer wheel diameter.
Tips:
- Your wheel size — you can usually find it printed on the side of the tyre.
- The correct spoke guard size — use the wheel size to determine which spoke guard diameter will fit your wheelchair.
- The inner cutout size — this is the opening in the centre of the spoke guard. It should be large enough to provide easy access to the wheel hub and its components.
Size Chart in Millimeters – No Handrim Cutouts
| 1) Wheel size | 2) Outer diameter (mm) | 3) Inner hole (mm) | Most Use |
|---|---|---|---|
| 20″ | 415 | 100 | Special models |
| 22″ | 453 | 100 | Kids & Junior |
| 24″ | 503 | 100 | Standard adults |
| 25″ | 525 | 100 | Large frames |
| 26″ | 550 | 100 | Sports / Rehab |
Size Chart in Inches – No Handrim Cutouts
| 1) Wheel size | 2) Outer diameter (in) | 3) Inner hole (in) | Most Use |
|---|---|---|---|
| 20″ | 16.34″ | 3.94″ | Special models |
| 22″ | 17.83″ | 3.94″ | Kids & Junior |
| 24″ | 19.80″ | 3.94″ | Standard adults |
| 25″ | 20.66″ | 3.94″ | Large frames |
| 26″ | 21.65″ | 3.94″ | Sports / Rehab |
Size Chart in Millimeters – With Handrim Cutouts
| 1) Wheel size | 2) Outer diameter (mm) | 3) Inner hole (mm) | Most Use |
|---|---|---|---|
| 20″ | 432 | 100 | Special models |
| 22″ | 470 | 100 | Kids & Junior |
| 24″ | 520 | 100 | Standard adults |
| 25″ | 542 | 100 | Large frames |
| 26″ | 572 | 100 | Sports / Rehab |
Size Chart in Inches – With Handrim Cutouts
| 1) Wheel size | 2) Outer diameter (in) | 3) Inner hole (in) | Most Use |
|---|---|---|---|
| 20″ | 17″ | 3.94″ | Special models |
| 22″ | 18.5″ | 3.94″ | Kids & Junior |
| 24″ | 20.47″ | 3.94″ | Standard adults |
| 25″ | 21.34″ | 3.94″ | Large frames |
| 26″ | 22.5″ | 3.94″ | Sports / Rehab |
Still Not Sure Which Size You Need?
If you're still unsure, don't worry — you can measure your wheel yourself in just a few minutes.
Tip: If your wheelchair has quick-release wheels, remove the wheel and lay it flat with the handrim side facing down, so the inner side of the wheel is facing up.
Spoke Guards WITHOUT Handrim Cutouts
Measure the distance between two opposite handrim mounting points, as shown in the picture. This measurement determines the correct outer diameter of your spoke guard.
✔ Use this method if you want a smooth outer edge without cutouts around the handrim mounts.
Tip: If you are measuring for a custom-size spoke guard, leave at least 2 mm (0.08 in) of clearance between the spoke guard and the handrim mounting points.
For example:
- If the distance between the mounting points is 505 mm, choose a spoke guard with an outer diameter of 503 mm.
- If the distance is 19.88 inch, choose a spoke guard with an outer diameter of approximately 19.80 inch.
Choosing a Mounting Method for Spoke Guards
The correct mounting method depends not only on the shape and design of the spoke guard, but also on the material from which it is made. Some mounting systems are suitable only for specific materials, spoke guard types or configurations.
For ready-made products in the BSP Shop, in 90% of cases the installation method is zip ties, as this is the most universal option. If you would like other types of mounting, please use the customizer.
The BSP Spoke Guard Customizer automatically takes all compatibility requirements into account. Once you have selected the material, shape and other options for your spoke guards, the customizer will display only the mounting methods that are compatible with your chosen configuration.
This means that you do not need to check the compatibility yourself. Simply choose one of the mounting methods available in the customizer.
Spoke Guards WITH Handrim Cutouts
Measure the distance across the two widest opposite handrim mounting points, as shown in the picture. This measurement determines the correct outer diameter of your spoke guard.
✔ Use this method if you want a spoke guard with cutouts around the handrim mounts.
Tip 1: If you are measuring for a custom-size spoke guard, leave at least 2 mm (0.08 in) of clearance.
For example:
- If the distance across the widest mounting points is 522 mm, choose a spoke guard with an outer diameter of 520 mm.
- If the distance is 20.55 inches, choose a spoke guard with an outer diameter of approximately 20.47 inches.
You may also choose a spoke guard that matches the measured diameter more closely. The space between the handrim mount and the cutout usually allows the spoke guard to overlap the wheel rim slightly if it is 1–2 mm larger, without affecting installation or the appearance of the wheel.
Tip 2: For custom spoke guards with handrim cutouts, please specify whether your handrim mounts are round or flat, as well as the number of handrim mounting points (4/6). This allows us to produce the correct cutout shape and positioning for a perfect fit.
Please note that pin mounting are not available for spoke guards with handrim cutouts.
This is because the handrim mounting brackets are not positioned in a standard location in relation to the wheel spokes. During wheel assembly, the handrim may be attached at different points, meaning that the position of the handrim brackets relative to the spokes is unique for each wheel.
Pin fixings require the pre-drilled holes in the spoke guard to align precisely with the wheel spokes. At the same time, the handrim cutouts must align with the handrim mounting brackets. Because these two positions vary independently, it is not possible to guarantee that both the pin holes and the handrim cutouts will align correctly.
For this reason, spoke guards with handrim mounting cutouts must be installed using a different fixing method.
Wheelchair Spoke Guards Bend Options
The spoke guard angle for each product is listed in the Specifications section of its product page.
Most standard BSP spoke covers available on our website come with a standard 8° bend, which fits the majority of wheelchair wheels.
Most BSP sports spoke guards are produced with an 11° angle by default.
If your wheelchair is equipped with a drum brake or has a steeper spoke angle due to an extended hub construction, you may require a deeper curve. In the customizer, you can select the maximum 11° bend, ensuring proper fit and reliable protection without interference.
Tips:
- Standard 8° bend — suitable for wheelchairs with a standard hub, without drum brakes or an extended hub.
- Maximum 11° bend — recommended if your wheelchair has drum brakes or an extended hub.
Choosing the Correct Central Cutout Diameter
The centre cutout provides easier access to the wheel hub. This is particularly useful for wheelchairs with quick-release wheels, as it allows you to reach the quick-release axle without removing the spoke guard.
Our standard centre cutout is 100 mm (3.94 inches). This size is suitable for around 90% of standard manual wheelchair wheels.
You can select a different centre cutout size when creating your spoke guards in the BSP Spoke Guard Customizer.
Tip: Do not make the cutout exactly the same size as the wheel hub. We recommend leaving some additional clearance around it. For example, if your hub has a diameter of 80 mm (3.15 inches), choose a centre cutout of at least 90 mm (3.54 inches).
Hub Motor Wheel Spoke Guards
BSP offers spoke guards for many of the world's most popular hub motor and power-assist wheels.
In our customizer, simply select your hub motor model from the library — no additional measurements are required. The correct cutouts and dimensions have already been prepared for these wheel models.
If you cannot find your hub motor in our library, don't worry.
Simply send us an email with a few photos of your wheel, and we'll work with you to create a custom template for it.
Once your wheel has been added to our library, future customers with the same hub motor will be able to order perfectly fitting spoke guards without taking any measurements, helping us continuously expand our compatibility database for the wheelchair community.
Frequently Asked Questions About Wheelchair Spoke Guard Sizes
How do I choose the right wheelchair spoke guard size?
How do I choose the right wheelchair spoke guard size?
You should always select your spoke guard size based on the outer wheel diameter, not the tire size. Our wheelchair spoke guards size chart shows measurements in millimeters and inches to help you find the correct fit.
How can I find my wheelchair wheel size?
How can I find my wheelchair wheel size?
To find your wheelchair wheel size, check the markings printed on the sidewall of the tyre. Most wheelchair tyres clearly display the tyre and wheel dimensions, usually as a combination of numbers such as 24 × 1 or 25 × 1.
In these examples, the first number indicates the nominal wheel size. For example, 24 × 1 means that the wheelchair has a 24-inch wheel, while the second number refers to the tyre width.
These markings will help you select the correct size when ordering wheelchair accessories, including spoke guards. If several different measurements are shown and you are unsure which one to use, take a clear photo of the tyre sidewall and contact us. We will help you identify the correct wheel size for your wheelchair.
What is the difference between 20″, 22″, 24″, 25″, and 26″ spoke guards?
What is the difference between 20″, 22″, 24″, 25″, and 26″ spoke guards?
20″ – pediatric or special wheelchairs
22″ – kids and junior wheelchairs
24″ – standard adult wheelchairs
25″ – large frames
26″ – sports and rehab wheelchairs
Are BSP spoke guards compatible with all wheelchair wheel sizes?
Are BSP spoke guards compatible with all wheelchair wheel sizes?
Yes. BSP spoke guards are designed for the most common wheelchair wheels: 20″, 22″, 24″, 25″, and 26″. If you are unsure, check the size chart or contact our team.
Can I order custom spoke guards if my wheel size is not listed in the size chart?
Can I order custom spoke guards if my wheel size is not listed in the size chart?
Yes. Through our custom spoke guard configurator, you can request personalized dimensions, bends, and designs for non-standard wheels.
Why is it important to follow the wheelchair spoke guard size chart?
Why is it important to follow the wheelchair spoke guard size chart?
Correct sizing ensures safety, durability, and comfort. Choosing the right size prevents gaps, reduces the risk of interference with brakes or hubs, and guarantees maximum protection for your wheelchair wheels.
Explore The Full Range of BSP Products
Explore the full range of BSP products — wheelchair spoke guards, custom trays, wheels & rims, mounts & hardware, bags & add-ons, and spare parts. Durable, customizable solutions trusted by hospitals, rehab centers, and wheelchair users worldwide.
