AirPro 650B Thorn Resistant Tubes are designed for 27.5” mountain bike setups where punctures from thorns, glass, and rough tracks are a constant hassle. With reinforced protection built into the tube, they help keep you riding with fewer interruptions and more confidence on mixed terrain.

These 27.5 x 1.90–2.30 inner tubes are a solid choice for cyclists who ride trails, gravel paths, or commute through areas where debris is common. If you’ve ever had a ride cut short by a slow puncture, these are the sort of tubes that reduce that risk and keep you rolling further with less worry about sharp impacts on the road or track.

Thorn resistant construction

A 3.5mm wall thickness gives these tubes a thicker barrier against thorns, sharp stones, and other trail debris. It adds an extra layer of protection compared to standard tubes, making them a practical option for off-road cycling and everyday riding in harsher conditions.

Built for 27.5″ (650B) MTB tyres

Sized to fit ETRTO 50-60/584 tyres, these tubes suit a wide range of 27.5” mountain bike setups. This makes them ideal for trail bikes and hardtails running mid-width MTB tyres.

Presta valve compatibility

Fitted with a 48mm Presta valve, they are compatible with most modern mountain bike rims. The valve length provides a secure fit for standard MTB wheel depths, making inflation straightforward with common pumps.

Convenient 2 pack

Supplied as a pair, these tubes are ready for both wheels or for keeping a spare on hand. A simple way to stay prepared for longer rides or remote trails where a backup matters.

Item specs

• Brand: AirPro
• Type: Thorn resistant inner tube
• Wheel size: 27.5” / 650B
• ETRTO: 50-60/584
• Tyre width range: 27.5 x 1.90–2.30
• Valve type: Presta
• Valve length: 48mm
• Wall thickness: 3.5mm
• Quantity: 2 tubes per pack