Quick Summary
YunSCM GGG120 inner tubes are a two-pack of replacement tubes for compatible 20-inch fat-bike tires. The stated size is 20 x 3.5/4.0 (89/102-406), and each tube has a Schrader valve. Match both the tire size and valve type before selecting a replacement.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Size | 20 x 3.5/4.0 (89/102-406); compare these markings with your tire. |
| Valve | Schrader; check that it matches your wheel. |
| Quantity | Two inner tubes. |
| Model | GGG120. |
What to Compare Before Buying
- Tire size: Check the tire markings for 20 x 3.5/4.0 or 89/102-406. A 20-inch wheel size alone does not confirm that the tube is the right width.
- Valve type: These tubes have Schrader valves. Compare the valve type with your wheel before choosing.
- Pack quantity: The package is described as containing two tubes. Consider whether that quantity suits your replacement needs.
Setup and Correct Use
The listing advises checking the valve position to orient the tube correctly during installation and avoiding puncture by sharp objects. Follow the instructions for your tire and wheel when replacing an inner tube.
Before You Decide
Confirm the tire size, the 89/102-406 specification, and the Schrader valve type. This pack contains two tubes.
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