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  • VIDEO
YUNSCM 20x3.5/4.0 Heavy Duty E-Bike Fat TubesYUNSCM
  • 2-PCS 20x4 Heavy Duty E-Bike Tubes 20X4.0 AV32mm (89/102-406) Inner Tubes 20" x 4.0" Compatible with 20x3.5/4.0 E-Bike Bicycle Fat Tire Tubes Schrader Valve
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2-PCS 20x4 Heavy Duty E-Bike Tubes 20X4.0 AV32mm (89/102-406) Inner Tubes 20" x 4.0" Compatible with 20x3.5/4.0 E-Bike Bicycle Fat Tire Tubes Schrader Valve

4.5 out of 5 stars 1,599 ratings
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Purchase options and add-ons

Brand YunSCM
Valve type Schrader
Material Butyl Rubber
Bike type Compatible with This Size Range of Bicycle Tires
Wheel size 2E+1 Inches
Item diameter 20 Inches
Item width 4 Inches
UPC 750139075553
Compatible Tire Width Minimum 3.5 Inches
Valve Length 1.57 Inches

About this item

  • Please confirm that it is a product purchased at our shop "YunSCM". All the imitation and fakes purchased in other stores are not within our guarantee scope.
  • Designed for E-bike 20 "X4.0" Heavy Duty inner tubes:20"x3.5/4.0 (89/102-406) Schrader Valve heavy-duty fat inner tube, we design the most suitable thick inner tube for e-bike according to the demand, which can easily meet the demand of 20"x4.0". In fact, its width can be extended to 5.0"+, in order to ensure quality, we conservatively used in the 3.5/4.0 range to ensure its life and air tightness, and reduce the frequency of wear and replacement.
  • HEAVY DUTY - Air Tightness: Using high elasticity and high quality butyl rubber and EPDM rubber, the thickness is increased by 40%, and the air tightness of the inner tube is increased by 200% than that of the ordinary butyl inner tube; After inflation, the tire can maintain a higher air pressure for 6-9 months, greatly reducing the inflation frequency. Good air tightness helps keep tire pressure stable, thus improving driving safety.
  • HEAVY DUTY- Ultra Durable: Our heavy duty inner tubes have higher puncture resistance than ordinary inner tubes, and the thicker 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.
  • Excellent shock absorption ability :The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement. Heavy Duty butyl rubber for maximum ride comfort - upgrade your ride experience.
  • Installation:20''x3.5''/4.0" bicycle heavy duty replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct.
  • Tip:Before installing the inner tube, please put the inner tube into the water for inspection, if there are bubbles, it means that it has been damaged, you can contact us. Check the valve position to ensure that the installation direction is correct. Note: The inflatable inner tube should avoid puncture by sharp objects.
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Product information

Technical Details

Product Dimensions ‎8 x 7 x 3 cm; 970 g
Item model number ‎GGG120
Bike Type ‎Compatible with This Size Range of Bicycle Tires
Colour ‎20x3.50/4.0 89/102-406
Size ‎20x3.5/4.0
Material ‎Butyl Rubber
Wheel Size ‎2E+1 Inches
Batteries Included? ‎No
Brand ‎YunSCM
Item Weight ‎970 g

Additional Information

ASIN B08Y8MVG2D
Customer Reviews
4.5 out of 5 stars 1,599 ratings

4.5 out of 5 stars
鶹 Rank
Date First Available March 8 2021
Manufacturer YunSCM

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2-PCS 20x4 Heavy Duty E-Bike Tubes 20X4.0 AV32mm (89/102-406) Inner Tubes 20" x 4.0" Compatible with 20x3.5/4.0 E-Bike Bicycle Fat Tire Tubes Schrader Valve

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Frequently bought together

2-PCS 20x4 Heavy Duty E-Bike Tubes 20X4.0 AV32mm (89/102-406) Inner Tubes 20" x 4.0" Compatible with 20x3.5/4.0 E-Bike Bicycl
This item: 2-PCS 20x4 Heavy Duty E-Bike Tubes 20X4.0 AV32mm (89/102-406) Inner Tubes 20" x 4.0" Compatible with 20x3.5/4.0 E-Bike Bicycle Fat Tire Tubes Schrader Valve
$32.99
Get it by Monday, Jul 21
In Stock
Sold by YUNSCM and ships from 鶹 Fulfillment.
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1PZ T20-X01 20 x 4.0 Fat Tire, Folding Mountain Bike Tires, Replacement MTB Tires for On or Off Road Use
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Get it by Monday, Jul 21
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Sold by UMPARTS U.S.A EXPRESS and ships from 鶹 Fulfillment.
Total price:$00
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Customer reviews

4.5 out of 5 stars
1,599 global ratings

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Customers say

Customers like the quality, fit, and functionality of the cycling tire tube. They mention it looks like a durable wall, fits perfectly, and works well so far.

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QualityFitFunctionality
19 customers mention "Quality"15 positive4 negative

Customers are satisfied with the quality of the cycling tire tube. They mention it's a top quality item that fits perfectly and looks like a durable wall.

"Good quality..." Read more

"Very good quality take my word for it." Read more

"Fat tire for an e-bike. Fit well, looks like a durable wall (thicker than retail stuff I shopped)" Read more

"Not productive and bad quality. After a month i had a leakage on tge tube from the air valve part" Read more

6 customers mention "Fit"6 positive0 negative

Customers are satisfied with the fit of the cycling tire tube. They mention it fits great and is perfect for an electric bike.

"Fat tire for an e-bike. Fit well, looks like a durable wall (thicker than retail stuff I shopped)" Read more

"the fit was right on!" Read more

"On time and fit great" Read more

"Very good product and fit." Read more

4 customers mention "Functionality"4 positive0 negative

Customers are satisfied with the functionality of the cycling tire tube. They mention it works well so far, doesn't leak, and stays inflated fine.

"No issues, inflated fine. Stays inflated. Doesn’t leak. Ideal!" Read more

"working good so far - great price" Read more

"Seem good, but I didn't get to find out...." Read more

Not a good product
1 out of 5 stars
Not a good product
Purchased these tubes for my EBike. The tube didn't even last 2 weeks of use. Popped halfway home on an 11km Journey. If you weight over 200lbs including the weight of the bike it won't be able to handle it. Waste of money. I don't recommend at all.
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Top reviews from Canada

  • Daylan
    5.0 out of 5 stars Good quality
    Reviewed in Canada on May 16, 2025
    Verified Purchase
    No issues, inflated fine. Stays inflated. Doesn’t leak. Ideal!
    Helpful
     Report
  • Kimmy
    5.0 out of 5 stars Excellent tubes
    Reviewed in Canada on March 28, 2025
    Verified Purchase
    Very good quality take my word for it.
    Helpful
     Report
  • serge
    4.0 out of 5 stars Prix intéressant
    Reviewed in Canada on February 16, 2025
    Verified Purchase
    Fait bien sûr le cadre de roue ,colle bien le pneu en place , satisfait
    Helpful
     Report
  • Richard Nolan
    5.0 out of 5 stars Fat Tire Tube
    Reviewed in Canada on March 7, 2025
    Verified Purchase
    Excellent 👌
    Helpful
     Report
  • Alex.W
    5.0 out of 5 stars Perfect
    Reviewed in Canada on February 7, 2025
    Verified Purchase
    Perfect match with my ebike.
    Helpful
     Report
  • buyer
    5.0 out of 5 stars i like it
    Reviewed in Canada on September 29, 2024
    Verified Purchase
    durable, if your tire always flat change your tire to thicker one, its not the fault of inner tube
    Helpful
     Report
  • 鶹 Customer
    5.0 out of 5 stars Fits and is a sturdy tube
    Reviewed in Canada on September 8, 2024
    Verified Purchase
    Fat tire for an e-bike. Fit well, looks like a durable wall (thicker than retail stuff I shopped)
    Helpful
     Report
  • 鶹 Customer
    1.0 out of 5 stars Pin Holes
    Reviewed in Canada on July 18, 2024
    Verified Purchase
    I went through 5 of these tubes. Wondered why I was getting so many flats. Decided to start patching All had pinholes. The rubber has weak pin size spots. I don’t recommend.
    One person found this helpful
    Helpful
     Report

Top reviews from other countries

Translate all reviews to English
  • Uncle Al 54
    5.0 out of 5 stars Fit as advertised, and heavy duty too!
    Reviewed in the United States on March 1, 2025
    Verified Purchase
    These were advertised as "heavy duty" 20x4 inner tubes. When I opened the box and took one out, I was very pleased at its heft and weight. It was much weightier than the tubes that the bike came with (that kept getting punctures!) I had had several flats in the front and finally one on the rear that I could not repair (it was pretty big!) So, in searching for hefty tubes, I found at least one other brand at a higher price point and read a few of the reviews. I went back to the "鶹 Choice" that had come up earlier and am glad I made that choice! They fit fine and were easy enough to install. I mean to say, it's changing a tube on a bike, something that I had done many times when I was young! I was pretty worried about these, if they would hold up, if they were heavy, heavy duty enough for the type of riding I do! Well, so far, I've put about twenty miles on them over the same graveled and muddy road surfaces that blew out the first ones after about a mile or two. No punctures to report. Well, not yet anyways. Only time and continued riding around the graveled and muddy trails will tell on that! I'm glad I got them is the bottom line. They fit fine, seem to be heavy duty enough, and were easy enough to install.
    Report
  • 鶹 Customer
    5.0 out of 5 stars Inner tube review
    Reviewed in the United Kingdom on May 15, 2025
    Verified Purchase
    Excellent quality, nice and thick as described. Quick delivery. Would recommend
    Report
  • vicente
    5.0 out of 5 stars Buen material
    Reviewed in Spain on July 10, 2025
    Verified Purchase
    Entrega muy rápida y buen producto
    Report
  • Noman
    5.0 out of 5 stars good
    Reviewed in Germany on June 26, 2025
    Verified Purchase
    good
    Report
  • Giovanni pizzino
    5.0 out of 5 stars Ottimo
    Reviewed in Italy on June 21, 2025
    Verified Purchase
    Molto resistente
    Report