Multi-buy deal: $20 each, 2 for $15 each, or 3 or more for $12 each. Mix and match any Bold tube sizes; the discount is applied automatically in the cart.

Got a flat? This is our own Bold 700 x 30/40C inner tube with a Presta (road/high-pressure) valve, 48mm valve. We keep plenty on the shelf at Blue Cycles, so pop in or order online.

Check the size printed on your tyre sidewall (it should read 700 x ...) and your rim's valve hole before you buy. Not sure? Bring the wheel in and we'll match it for you.

Key features

• Fits 700 x 30/40C tyres
• Presta (road/high-pressure) valve, 48mm long
• Bold – Blue Cycles' own brand

Specifications