Supplier order — extended lead time. The supplier currently indicates delivery around 7 October 2026. Please allow additional time for processing and onward delivery. This item has a longer lead time than our standard 3–5 business-day estimate. Contact us before ordering to confirm timing for your address. See our delivery information.
YunSCM 27 × 1¼–1⅜ Inner Tubes - Schrader 33 mm, Pair
A pair of YunSCM replacement inner tubes for 27 × 1¼–1⅜ bicycle tyres (ETRTO 32/37-630), with 33 mm Schrader valves. The pack contains two inner tubes; tyres are not included.
Check the fit before ordering
Match the size and rim diameter on your existing tyre, and check that you need Schrader valves with a 33 mm valve length. Contact our team for help choosing the correct size or ask about fitting at our London workshop.
Specifications
| Brand | YunSCM |
|---|---|
| Tyre size | 27 × 1¼–1⅜ |
| ETRTO | 32/37-630 |
| Valve | Schrader 33 mm |
| Pack contents | 2 inner tubes |