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Inner Tube 8.5x2L – Bent Valve 70/90


2 Inner Tubes 8 1/2 x 2L with 70°/90° Bent Valve

For Electric Scooters.

Compatible with Urban XR1, SoFlow SO3 Pro, SO3 Gen 2, SO4 Gen 3, and many more!

SKU: CAA85X2LV7090 Category:

8.5x2L Inner Tubes with 70°/90° Angled Valve

Your product consists of two 8 1/2 x 2L inner tubes with a 70°/90° angled Schrader valve. These highly durable inner tubes are perfect for electric scooters and can be installed in 8 1/2 x 2 or 50/75-6.1 inch tires.

Frequently Used for Soflow SO3 & SO4, Urban XR1, Wayscral Kickway E1

You can install these 8.5x2L inner tubes on several scooter wheels:

  • SoFlow SO3 Pro
  • SoFlow SO3 Gen 2
  • Soflow SO4 Gen 3
  • The Urban XR1
  • Wayscral Kickway E1

8 1/2 x2L inner tube

⚠️ WARNING: These inner tubes are not compatible with the tires of Soflow SO4 Pro and SO4 Pro Gen 2. These two models have 10-inch tires.

Interestingly, the Soflow SO4 Pro Gen 3 does indeed have 8.5-inch tires. However, the brand has removed this model from its website.
For owners of this scooter, you can confidently order these inner tubes.

Feel free to check the compatibility list below on this page.

70°/90° Angled Schrader Valves

These 8.5-inch inner tubes have 70° angled valves that are oriented 90° outward (70/90). The valve orientation must be taken into account for optimal insertion into the rim. These properly angled valves ensure easy inflation and smooth riding.

Premium-Quality Rubber

Thick, highly impermeable, and made with premium butyl rubber. They are sturdy and offer excellent resistance to wear, friction, and punctures – CY458212L XXX – Slightly inflated, the inner diameter is 15cm, and the outer diameter is 21.5cm.


This product is compatible with the following models

  • Soflow SO3
  • Soflow SO3 Pro
  • Soflow SO4
  • Soflow SO4 Pro
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