Fingerprint Sensor AS608 - A Beginner's Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →
The JSumo JS4320 Aluminum Silicone Wheel Pair is a compact, high-grip wheel set made for robot builds that need strong traction and a secure shaft fit. With a machined aluminum hub and soft silicone tire, this wheel pair is a solid choice for non-magnetic sumo robots, lightweight combat robots, and other custom drive systems where grip and control matter.
This version comes with a 4 mm center hole and an M4 tapped setscrew, making it easier to lock the wheel onto compatible motor shafts. If you need a wheel that stays light but still gives a strong contact patch, the JS4320 is a practical option for both new builds and upgrades.
Original JSumo product: We list this item as a distributor, so the product title now starts with JSumo for clearer brand matching.
Why builders choose this wheel pair
- Strong traction: Soft silicone tire helps improve grip during pushing, turning, and quick starts.
- Compact but capable: Good size for smaller competition and custom robot platforms.
- Aluminum hub: More solid and durable than basic plastic wheel types.
- Secure shaft lock: M4 tapped setscrew helps keep the wheel firmly in place.
- Built for robot use: A good fit for sumo and lightweight combat builds.
What you can build
This wheel pair works well for non-magnetic sumo robots, lightweight combat robots, and compact two-wheel drive robots that need reliable floor grip.
It is also useful for custom chassis projects, small drive platforms, and robot upgrades where you want a balanced mix of low weight and good traction.
Starter bundles
- Browse JSumo robot parts for matching mechanical and drive parts.
- DC gear motors for compact robot movement.
- Sumo robot chassis parts for competition-ready builds.
Recommended add-ons
- Motor brackets for easier wheel mounting.
- Shaft and drive hardware for custom setups.
- Robot chassis parts for fresh builds and upgrades.
- Hex tools for assembly and maintenance.
Technical specifications
| Product name | JS4320 Aluminum Silicone Wheel Pair |
|---|---|
| Model | JS4320 |
| Product code | JS20786 |
| Wheel diameter | 43 mm |
| Wheel width | 20 mm |
| Weight | 26 g each |
| Silicone hardness | 20 Shore |
| Center hole diameter | 4 mm |
| Shaft locking | M4 tapped setscrew |
| Suggested use | Non-magnetic sumo robots, 1 lb to 3 lb combat robots |
Fitment & shaft notes
This version is made with a 4 mm shaft hole. Please check your motor shaft size before ordering to make sure the fit is correct.
JSumo states that the JS4320 model is produced with a 4 mm hole for this version.
What’s in the box
- 2 x wheels
- 2 x M4 setscrews
- 1 x Allen wrench
Compare with related JSumo wheel options
| Product | Size | Shaft / hub fit | Best for |
|---|---|---|---|
| JSumo JS2622 Silicone Wheel Pair | 26.5 × 22 mm | 3 mm | Compact mini sumo and line follower builds |
| JSumo SLT20P Silicone Wheel Pair | 33 × 20 mm | Fits 12/15/16 mm gearbox motors | Heavy-grip mini sumo builds |
| JSumo Atom Silicone Wheel 37x34mm Pair | 37 × 34 mm | 3 mm | Wide traction for lighter robots |
| JSumo JS4311 Aluminum - Silicone Wheel Set (43 x 11mm - Pair) | 43 × 11 mm | 3 mm | Thin wheel profile for light robots |
| JSumo JS4320 Aluminum - Silicone Wheel Pair (43mm x 20mm) Pair (4mm Hole) | 43 × 20 mm | 4 mm | Non-magnetic sumo and small combat robots |
| JSumo JS4030 Rubber Wheel Pair | 40 × 30 mm | 6 mm | Larger traction wheel for stronger pushing robots |
FAQ
Is this sold as a pair?
Yes. This product includes two wheels in one set.
What shaft size does it fit?
This version has a 4 mm center hole, so it is made for 4 mm shaft setups.
How is the wheel secured to the shaft?
It uses an M4 tapped setscrew to lock the wheel onto the shaft.
What robots is this best for?
It is a good fit for non-magnetic sumo robots, lightweight combat robots, and compact custom drive builds.
Is the tire made for grip?
Yes. The silicone tire is made to give strong traction for robot movement and pushing power.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Customers also bought
sold out
SKU: JS19446
JSumo JS2622 Replacement Silicone Tyres Pair
sold out
SKU: JS15478
JSumo Atom Silicone Wheel 37x34mm Pair
sold out
SKU: JS15326
JSumo Plastic Caster Wheel
Build with this board
Thumb Joystick - A Beginner's Guide
Wire a joystick to your Arduino, read X/Y, then print UP / DOWN / LEFT / RIGHT to the serial monitor.
read tutorial →Motor Drive (BTS7960 43A) - A Beginner's Guide
Bench-test a 43 A motor driver before wiring the full project. Catches weak power, mis-pinning, and dead boards before they cost you time.
read tutorial →Raspberry Pi Pico (RP2040) - A Beginner's Guide
Coming from UNO and the Pico won't show a COM port? Here's the BOOTSEL trick, the driver fix, and the first sketch that actually works.
read tutorial →Notes from the bench
Ask the community
Project Showcase — show what you built
Share what you built. Photos, BOM, what worked, what didn't.
view thread →How to ask a good question (and actually get answers)
Symptom + what you tried + clear photo = answers within hours.
view thread →ESP32 brownout when wiring a sensor — fixes that worked
Brownout reset when adding a sensor? Notes on supply decoupling and GPIO checks.
view thread →First Arduino — sketch upload error, what to try?
Upload failing on your first Uno? Driver, COM port, board match — checklist inside.
view thread →