Quick Summary
The YunSCM 2pcs 54/64-507 24 inch Bike Inner Tubes are for 24-inch wheels and tyre widths between 2.125 and 2.40. They use an AV32mm valve and are supplied as a 2-piece set.
This is a tyre tube choice where size match matters most. Check the wheel size, tyre width and valve type before choosing an offer, especially if you are replacing an existing tube.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | YunSCM. |
| Product type | Bike inner tubes for 24-inch wheels. |
| Pack quantity | 2 pieces, so the set covers two tube replacements. |
| Size | 54/64-507 and 24" x 2.125-2.40, which means the tube needs to match the wheel and tyre size. |
| Valve | AV32mm valve, so the valve type and valve length should suit the rim and pump setup. |
What to Compare Before Buying
- Wheel size: This tube is for 24-inch wheels, so compare it with your wheel diameter before ordering.
- Tyre width: The stated fit is 2.125 to 2.40, so confirm your tyre falls within that range.
- Valve type and length: It uses an AV32mm valve, so check that this matches your rim and inflation setup.
- Pack quantity: The set contains 2 tubes, which suits buyers replacing more than one tube or keeping a spare.
What Else You May Need
Fitment depends on having the correct 24-inch wheel size, matching tyre width and a compatible AV valve setup. If you are replacing a damaged tube, it is also sensible to check the tyre and rim for anything that could damage the new tube during fitting.
Before You Decide
Confirm the 24-inch wheel size, the 2.125 to 2.40 tyre width range and the AV32mm valve before choosing this set. The pack contains 2 tubes, so it suits buyers who need a pair rather than a single replacement.









