---
product_id: 292616810
title: "2-PCS 20x4 Self-Sealing Fat Bike Tubes 20x4.0 Puncture Resistant Tubes"
brand: "yunscm"
price: "58038CFA"
currency: XOF
in_stock: true
category: "Yun Scm"
url: https://www.desertcart.sn/products/292616810-2-pcs-20x4-self-sealing-fat-bike-tubes-20x4-0
store_origin: SN
region: Senegal
---

# 20x4.0/4.5 universal fit works down to -15°C cold weather self-sealing puncture protection 2-PCS 20x4 Self-Sealing Fat Bike Tubes 20x4.0 Puncture Resistant Tubes

**Brand:** yunscm
**Price:** 58038CFA
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the Deal: Never Let a Flat Kill Your Ride!

## Quick Answers

- **What is this?** 2-PCS 20x4 Self-Sealing Fat Bike Tubes 20x4.0 Puncture Resistant Tubes by yunscm
- **How much does it cost?** 58038CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/292616810-2-pcs-20x4-self-sealing-fat-bike-tubes-20x4-0)

## Best For

- yunscm enthusiasts

## Why This Product

- Trusted yunscm brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cold-Weather Ready Performance:** Operates reliably in temperatures as low as -15°C, so your ride never stops—even in winter.
- • **Universal Fit for Fat Tire Fans:** Fits all 20"x4.0/4.5 fat bike tires, perfect for BMX, mountain, electric, and city bikes alike.
- • **Built to Last, Built for Adventure:** Thicker butyl rubber design offers superior puncture resistance and durability, reducing maintenance downtime.
- • **Easy Installation with Schrader Valve:** 32mm valve length ensures hassle-free setup and compatibility with standard pumps.
- • **Ride Fearlessly with Self-Sealing Tech:** Automatically repairs small punctures in 5-8 seconds, keeping you rolling without interruptions.

## Overview

These 2-pack 20x4.0/4.5 fat bike tubes feature self-sealing technology with pre-installed sealant that automatically repairs small punctures within seconds. Designed with durable butyl rubber and a 32mm Schrader valve, they fit a wide range of fat tire bikes including BMX, mountain, electric, and city models. Engineered to perform in temperatures down to -15°C, these tubes reduce maintenance frequency and keep you confidently riding through all terrains and seasons.

## Description

desertcart.com: 2-PCS 20x4 Self-Sealing Fat Bike Tubes 20x4.0 Puncture Resistant Tubes | 20x4.0/4.5 Fat Tire Tubes Super Automatic Repair Compatible with BMX, Mountain, Electric Bicycle Fat Tubes Schrader Valve : Sports & Outdoors

## Features

- SIZE: 32mm Schrader Valve. Fits all 20"x4.0/4.5 fat bike tire tubes Installation Precautions:Please check the side of your tire for the tire size your bike uses
- Easy To USE: The Self Sealing Bike Inner Tube is a self-repair for some small holes or very fine cracks.For example, after a long time, some places will leak air quietly,accidentally hit nails and other problems, which are easy to repair.It is worth noting that our self-repairing inner tube can be used within the normal temperature environment and cold days -15 ℃,and it is more conducive to travel in cold weather.
- Safe Bike Tubes: Pre-installed with Sealant to provide maximum puncture protection and prevent flat tires on your bike.The self-repairing inner tube is a thicker design, which is more durable than the normal inner tube.The puncture repair fluid circulates through the inner tube, automatically sealing the punctures.After testing, the leak can be repaired within 5~8 seconds under normal conditions.
- Ultra Durable: Our inner tubes have higher puncture resistance , and the body can withstand more friction and wear, thus extending the service life of the tube, reducing replacement frequency and maintenance costs. And in long-term use.
- Universal fit for Mountain, Road, BMX, Electric, and City bikes: Designed specifically for 20-inch wheels, this tube is the perfect spare or upgrade for junior mountain bikes (MTB), e bikes, BMX freestyle, city commuters, and folding bikes. Whether tackling rugged trails or smooth roads, it delivers reliable performance across all riding styles.
- Please note: Because the Self Sealing fluid is flowing, in order to prevent the liquid from flowing out during operation, please do not concentrate the center of gravity or the liquid near the air nozzle when pumping up
- Installation: 20"x4.0"/4.5" fat bicycle replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08MQ4P879 |
| Best Sellers Rank | #6,338 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #43 in Bike Tubes |
| Bike Type | Compatible with This Size Range of Bicycle Tires |
| Brand Name | YunSCM |
| Compatible Tire Width Maximum | 45 millimeters |
| Compatible Tire Width Minimum | 40 millimeters |
| Customer Reviews | 4.2 4.2 out of 5 stars (921) |
| Included Components | 2 pcs 20x4.0/4.5 AV32mm Schrader Valve Self-Sealing Fat Bike Tubes |
| Item Diameter | 20 inches |
| Item Highlight | 20x4.0/4.5 Fat Tire Tubes Super Automatic Repair Compatible with BMX, Mountain, Electric Bicycle Fat Tubes Schrader Valve |
| Item Weight | 1.46 kg |
| Item Width | 4 inches |
| Manufacturer | YunSCM |
| Manufacturer Part Number | YunSCM2020110402 |
| Material Type | Butyl Rubber |
| Model Number | 20x4.0/4.5 |
| Number of Items | 2 |
| Size | 20X4.0/4.5 |
| UPC | 750139075393 |
| Valve Length | 0.85 inches |
| Valve Type | Schrader |
| Warranty Description | 180 days |
| Wheel Size | 20 inches |

## Product Details

- **Brand:** YunSCM
- **Item Diameter:** 20 inches
- **Material:** Butyl Rubber
- **Valve Type:** Schrader
- **Wheel Size:** 20 inches

## Images

![2-PCS 20x4 Self-Sealing Fat Bike Tubes 20x4.0 Puncture Resistant Tubes - Image 1](https://m.media-amazon.com/images/I/61nk2qx60cL.jpg)

## Questions & Answers

**Q: Does anyone have any experience with a puncture with these tires? Did they work?**
A: Yeah, I bought these in January and both of them were brought down by holes smaller than a pin hole. Don't waste your time on these.

**Q: What's the Psi for the inner tube**
A: PSI is on the tire not the tube.  Probably 20 to 30.

**Q: In case of a large puncture can these tubes be patched in the normal way?**
A: I don't know, but I would think you could patch them. The tubes look and feel like a normal tube.

## Frequently Bought Together

- 2-PCS 20x4 Heavy Duty Fat E-Bike Tubes 20 x 4.0/4.5 AV32mm Super Automatic Repair, Self-Sealing, Puncture Resistant Compatible with 20x4 20x4 1/4 20x4.25 20x4.50Bike Bicycle Tire Tubes Schrader Valve
- Fat Bike Tire Liner, Bicycle Tube Flat Protector Compatible with 20"/24"/26"/27.5/29"
- HEB VIPERESS 20x4.0 Fat Tire - Puncture Resistant Ebike Tires, 20x4 Fat Bike Tire for Electric Bike, MTB, Heavy Duty, All Terrain Tire for Street/Trail Riding (Qty 2 - Silver Logo, 20 x 4 Fat Tire)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-10-15*