Duro 27.5” / 650B MTB Inner Tube – 2.75–3.25” Presta 48mm Valve

Built for high-volume mountain bike and e-MTB tyres, this 27.5” / 650B inner tube is designed to suit wide tyre sizes from 2.75” through to 3.25”. Featuring a 48mm Presta valve, it’s ideal for modern trail, enduro, freeride, and electric mountain bikes running larger volume tyres and wider rims.

Constructed for reliable air retention and durability, this tube is well suited to demanding off-road riding conditions while offering easy compatibility with tubed wheel setups. The 48mm valve length works well with most standard MTB rims and many modern tubeless-ready wheelsets when running tubes.

Whether you need a reliable replacement tube or a dependable spare for long rides, this 650B tube delivers excellent compatibility for aggressive MTB and e-bike applications.

Features

• Suitable for 27.5” / 650B wheels
• Fits tyre widths from 2.75” to 3.25”
• 48mm Presta (French) valve
• Designed for high-volume MTB and e-MTB tyres
• Ideal for trail, enduro, gravity, and electric mountain bikes
• Reliable air retention and durable construction
• Great as a spare tube for wider tyre setups

Specifications

• Wheel Size: 27.5” / 650B
• ETRTO Compatibility: 70/82-584
• Tyre Width Compatibility: 2.75”–3.25”
• Valve Type: Presta (FV)
• Valve Length: 48mm