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(2-Pack) AR-PRO 8.5 Inches x 2 Inches Scooter Inner Tube Replacement - 50/75-6.1 Inner Tubes for Electric and Gas Scooters, Mini and Pocket Bikes, and More Butyl Rubber Inner Tubes

  • Based on 3,061 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Sep 15
Order within 15 hours and 53 minutes
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Size: 8.5" x 2" (TR4A)


Features

  • PERFECT XIAOMI M365 COMPATIBLE INNER TUBE REPLACEMENT - Xiaomi's M365 electric scooter model has front and rear tires that are 8.5 inches in diameter and are 2 inches thick. These 2-pack scooter replacement inner tubes have the exact dimensions to fit Xiaomi M365 tires.
  • COMPATIBLE WITH A WIDE VARIETY OF SCOOTERS - This type and size of inner tubes are popular among electric and gas scooters, pocket bikes, mini choppers, mini bikes, and mobility scooters. Several brands that have models compatible with these replacement inner tubes include Razor, Bladez, Gotrax, and more!
  • EXTRA THICK BUTYL RUBBER INNER TUBES - With thick, shock-absorbent butyl rubber, you feel the bumps and potholes as your scooter glides along. These replacement inner tubes are .5 mm thicker than average inner tubes providing a higher impact dampening effect. Aside from that, these tubes are also chemical, weather, tear, and wear-resistant.
  • SAFETY FIRST IS OUR MOTTO: Heavy-duty inner tube and tire. When and if punctured, it immediately creates an airtight seal to prevent damage, destruction and injury to the rider. Safe in any season or weather condition.
  • IMPORTANT NOTE: This replacement kit is an aftermarket product produced by CalPalmy (TM). It meets or exceeds the performance of OEM replacements (based on in-house testing). We do not have any affiliation with or endorsement from any of the manufacturers mentioned.

Brand: AR-PRO


Size: 8.5" x 2" (TR4A)


Rim Size: 2 inches


Section Width: 2 inches


Tire Aspect Ratio: 75


Load Index: 97


Speed Rating: R


Tread Type: Symmetrical


Maximum Pressure: 50 psi


Rim Width: 8.5 inches


Rim Size: 2 inches


Load Index: 97


Speed Rating: R


Tread Type: Symmetrical


Maximum Pressure: 50 psi


Automotive Fit Type: Universal Fit


Construction Type: Multi-layered


Seasons: Year Round


Brand Name: AR-PRO


UPC: 684753222058


Unit Count: 2 Count


Included Components: 8.5x2" Inner Tube


Manufacturer: AR-PRO


Manufacturer Part Number: 8-1/2"x 2"


Manufacturer Warranty Description: NoApplicable


Size: 8.5" x 2" (TR4A)


Section Width: 2 inches


Tire Aspect Ratio: 75


Rim Width: 8.5 inches


Tire Diameter: 8.5 inches


Item Diameter: 8.5 inches


Item Weight: 4.64 ounces


Vehicle Tire ISO Metric Size Description: 216/75R8


Ply: Multi-Ply


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 15

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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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • Inner tube
Size: 8.5" x 2" (TR4A)
Very good!
Reviewed in the United States on July 12, 2026 by Elijah Dylan Yang

  • Ok
Size: 8.5" x 2" (TR4A)
Ok buen producto
Reviewed in the United States on July 26, 2026 by Joimer

  • Worthwhile tubes.
Size: 8.5" x 2" (TR4A)
They are definitely tubes that hold air. The size is correct. The fit is correct. They are just as easy as any other tube to install and use. They seem thick enough to not be pieces of crap that easily puncture.
Reviewed in the United States on March 20, 2026 by Judson

  • One had a hole-
Size: 8.5" x 2" (TR4A)
One of the two tubes had a hole in it. But other than that they are normal efficient tubes for our scooter
Reviewed in the United States on June 28, 2025 by Kindle Customer

  • Great
Size: 8.5" x 2" (TR4A)
Worked great on my 8.5 x2 scooter. Great deal since you get 2 tubes
Reviewed in the United States on May 31, 2026 by Jason

  • Works great
Size: 8" x 2" (TR87)
Works great
Reviewed in the United States on June 7, 2026 by Our Friend

  • Gyroor HR9 does not fit without valve stem modifications
Size: 8.5" x 2" (TR4A)
Does not fit Gyroor HR9 electric scooter since valve stem is too long (19mm). OEM tube valve stem is 2mm shorter which allows proper valve stem clearance when installing. I carefully modified new valve stem by removing valve in stem and grinding down new valve stem by 2mm and reinstalling valve which I also shortened by snipping off ~1mm ... show more
Reviewed in the United States on June 30, 2026 by Mary

  • Worked well for about 3 months, then Popped.
Size: 8" x 2" (TR87)
The tubes weren't as thick as the tube they were replacing, so they didn't seem heavy duty to me. Check the pressure once a week to make sure it stays at 50 PSI, which is recommended by the scooter manufacturer. Tube popped after 3 months of use. Planning to go with a brand name tube for the next one instead of this generic one. ... show more
Reviewed in the United States on September 16, 2025 by Tony

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