Duro Tube 650B / 27.5″ x 1.95–2.125 (50/57-584) – 40mm Presta Valve

Keep your 27.5″ bike rolling smoothly with this reliable 650B inner tube, designed to suit tyres ranging from 1.95 to 2.125 (50–57-584). Built for everyday riding across mountain, hybrid and commuter bikes, this tube delivers dependable air retention and durability at excellent value.

Designed to match the popular 27.5″ (650B) wheel size, it’s compatible with a wide range of mountain bikes, trail bikes and hybrid builds.

Key Features:

• Fits 650B / 27.5″ wheels

• Suits tyre widths 1.95–2.125 (50–57-584 ETRTO)

• 40mm Presta (French) valve

• Durable rubber construction for reliable air retention

• Ideal for MTB, trail and hybrid bikes

• Perfect as a replacement or spare tube

A simple, dependable essential every 27.5″ rider should have in their kit.