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🚴♂️ Ride Bold, Ride Smooth – Never Miss a Beat with YunSCM Tubes!
YunSCM 20x4 Fat Bike Tubes are engineered for fat and mountain bikes with 20-inch wheels, featuring a durable butyl rubber build and a 32mm Schrader valve for easy inflation. Designed to enhance ride comfort and safety by absorbing shocks and resisting aging, these tubes offer quick installation and reliable performance, making them a top choice for e-bike and fat tire enthusiasts.






| ASIN | B08Y8MVG2D |
| Best Sellers Rank | 6,864 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 69 in Cycling Tubes |
| Bike Type | Electric bicycle |
| Brand Name | YunSCM |
| Compatible Tire Width Maximum | 101.6 Millimetres |
| Compatible Tire Width Minimum | 89 Millimetres |
| Country Of Origin | China |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,077) |
| Item Diameter | 20 Inches |
| Item Type Name | 20x3.5/4.0 |
| Item Weight | 0.97 Kilograms |
| Item Width | 4 Inches |
| Manufacturer | YunSCM20210306120 |
| Manufacturer Part Number | YunSCM20210306120 |
| Material Type | Butyl Rubber |
| Model Number | GGG120 |
| Size | 2-Pack |
| UPC | 750139075553 |
| Valve Length | 1.57 Inches |
| Valve Type | Schrader |
| Wheel Size | 20 Inches |
M**D
Satisfy
Good quality 👍
S**N
NEW TUBES
GREAT TUBES
D**D
Well made, good price
Arrived on time, but unfortunately wrong size orderd.
K**N
Good
Good
Y**E
Very good
Good
O**N
They feel Good...
I like the feel of these tubes and yes time will tell if they are the business. I replaced my original tubes after 2 years because i fill them with slime which goes hard after this time. My original tubes hit a puncture early on but the slime sealed the problem. I did not trust the source of my original purchase so i swapped onto these tubes which so far is good and doing the job so i am very happy and long may it continue. I may have been unlucky with the original and we know the danger of punctures but my mind works on gut feelings and my gut instincts tell me that the swap over to these is a good decision so here we go with them...
M**T
Great value for money
As described
T**Y
Both tubes failed!
Worst tubes I have ever bought both failed due to splitting even though I followed the instructions and only inflated them to 80% for the first month. Avoid!
M**D
كل شي على مايرام
D**N
No issues, inflated fine. Stays inflated. Doesn’t leak. Ideal!
V**E
Entrega muy rápida y buen producto
Z**M
Arrivati puntuali come sempre. Ottimi!
W**B
- Compatibility - I used this to replace the tube in the Front Tire of my AddMotor 'HEROTRI M-365X'. I expect, it will fit the back tires equally well. - Durability - The tubes seem hefty & durable, maybe even more so than the original tube I replaced. I expect that the thick butyl rubber construction will make this replacement outlast the original. - Ease of Installation - Everything fit great & installed easily. The whole process took less than 30 minutes. This install was much easier than my previous experiences with my mountain bike & electric scooter. I had been a bit nervous before the installation due to the electric motor being located in the front wheel, but it was not an issue. Big thanks to AddMotor engineers for making the replacement quick and easy with an unpluggable powerline to the front motor. - Tools - 3/4" Wrench Tire Levers Zip Tie I used a 3/4" wrench to remove the wheel. I used a cheap pair of tire levers that I found in my garage to help remove & replace the tire. I'd suggest getting an inexpensive pair, or using a couple of flat head screwdrivers. Not a lot of force was required, but they defiantly made the job a lot easier. Also, I used a zip-tie to help secure the power cable after re-installation.
Trustpilot
2 months ago
4 days ago