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2-PCS 20x4 Heavy Duty Fat E-Bike Tire Tubes 20 x 4.0/4.5 TR4A-40L Scharder Valve (102/114-406) Inner Tubes Compatible with 20x4.0 20x4 20x4.25 20x4.50 Bike Bicycle Fat Tire Tubes

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$24.99 Why this price?
Memorial Day Sale · 36% off was $39.00

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, May 26
Order within 2 hours and 41 minutes
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Features

  • Heavy Duty inner tube:20''x4.0''/4.5" TR4A-40L(102/114-406) Heavy duty bicycle replacement inner tube, these inner tubes are ideal for a wide range of applications. Enhanced the ductility of the heavy load tire, so that the scope of application is expanded, Compatible with 20x4.0 20x4.25 20x4.50 E-Bike Bicycle tires.
  • 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''x4.0''/4.5" bicycle heavy duty replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct.
  • This heavy duty inner tube is compatible with the corresponding models of mountain bikes, road bikes, Cruiser bikes, electric bikes; At the same time, the increase in thickness can meet the needs of the longer driving range and load of the prevailing electric bicycles.
  • 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.

Brand: YunSCM


Valve Type: Schrader


Material: Butyl Rubber


Wheel Size: 20 Inches


Item Diameter: 20 Inches


Brand Name: YunSCM


Item Weight: 1.11 Kilograms


Manufacturer: YunSCM


Model Number: YunSCM2021071903


Manufacturer Part Number: YunSCM2021071903


Warranty Description: O


Included Components: 2 pcs 20 x 4.0/4.50 TR4A-40L Scharder Valve heavy duty bike tubes.


Valve Type: Schrader


Wheel Size: 20 Inches


Compatible Tire Width Maximum: 114 Millimeters


Bike Type: Compatible with This Size Range of Bicycle Tires


Item Diameter: 20 Inches


Item Width: 4 Inches


Valve Length: 40 Millimeters


Size: 20


Material Type: Butyl Rubber


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Learn more about financing & leasing here.

Top Amazon Reviews


  • Great for Mac fox
Great price! I used these on my son’s MacFox bike & saved a ton of money. He’s popped three so far
Reviewed in the United States on February 20, 2025 by Kelly J Flowers

  • Schrader THREADED valve stems
New ebike from Amazon (with standard stems) was leaking at the base of the valve stem after first 20 miles. E-bikes SHOULD have (Schrader) threaded stems due to the added torque. These were the ONLY Threaded ones on Amazon In my size (20x4). Also need Threaded In size 24x4 but there were none available from any brand on Amazon. 24x4 Threaded are standard on some Eahora ebikes, maybe avail as "spare parts". These are much thicker than my originals, working great so far. ... show more
Reviewed in the United States on January 17, 2026 by Carradine

  • Decent tubes for the price
These tubes do not appear to be heavy duty, but they are working just fine. It's helpful that the valve stem is threaded with the supplied nut, it holds the valve stem securely outside the rim during mounting
Reviewed in the United States on November 9, 2023 by Steven Peck

  • Good quality
These are better quality than the previous tubes we had. Better stem and thicker rubber.
Reviewed in the United States on July 1, 2023 by Peter Shinners

  • Na
Na
Reviewed in the United States on August 28, 2022 by Nelson

  • Inner tubes
Works as advertised. Nothing exciting about it . It's a rubber tube.! Little thicker. No issues
Reviewed in the United States on October 3, 2023 by oldboy

  • Might have gotten a bad tube
Had an issue with the valve splitting.
Reviewed in the United States on January 8, 2026 by Riley

  • Heavy duty tube for my e-bike
Ordered two and replaced my front tube on my new e-bike that came with a slow leak .. the new tube feels heavy duty, went on and seems to be fine.. satisfied with purchase..
Reviewed in the United States on June 2, 2023 by Nicholas

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