

🚲 Ride Bold, Ride Smooth – Upgrade Your Fat Bike Game!
YunSCM 20x4 Fat Bike Tubes are premium butyl rubber inner tubes designed for 20-inch fat tires ranging from 3.5 to 4.0 inches. Featuring a reliable AV32mm Schrader valve, these tubes offer excellent sealing, ozone and aging resistance, and shock absorption for enhanced comfort and safety. Easy to install and backed by strong customer satisfaction, they’re the perfect upgrade for mountain, road, and e-bikes.






| ASIN | B08Y8MVG2D |
| Batteries included? | No |
| Best Sellers Rank | 7,344 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 50 in Cycling Tubes |
| Bike type | Electric bicycle |
| Brand | YunSCM |
| Color | 20x3.50/4.0 89/102-406 |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,015) |
| Date First Available | 8 Mar. 2021 |
| Department | Unisex |
| Item model number | GGG120 |
| Manufacturer | YunSCM20210306120 |
| Material type | Butyl Rubber |
| Product Dimensions | 8 x 7 x 3 cm; 970 g |
| Size | 2-Pack |
| Style | riding |
| Wheel size | 20 Inches |
M**D
Satisfy
Good quality 👍
A**R
Inner tube review
Excellent quality, nice and thick as described. Quick delivery. Would recommend
M**T
Great value for money
As described
B**V
Punctured
Not very durable .. quickly get punctured
C**E
Does the job
Perfect to replace the tube on my e-bike
P**H
Inner tube
Super fast delivery as normal, not used yet but seem strong tough tubes
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...
O**E
Quality at its best
I love the quality. Exactly as advertised on Amazon. I recommend this product. The packaging is amazing and the product fits right on my bike. The thickness of the tube is very durable. Thanks to the seller for this quality product.
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.
V**Y
Bought these fat bike tubes for my son’s e-bike. He LOVES them. He says they fit perfectly and he gives them ⭐️⭐️⭐️⭐️⭐️ Quality is great!
Trustpilot
2 weeks ago
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