This Schwalbe AV4 16/18 inch tube is our most popular inner tube - favoured by Brompton riders
It is exactly the same tube as the Brompton XL tube with the addition of a rim nut (see below for more info about rim nuts) and a box. It fits all Brompton tyres.
This inner tube weighs in at just 85g and comes with a Schrader / car type valve - that is a whopping 20g (almost 25%) lighter than the Brompton standard inner tube
Features
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Lightweight and strong!
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Suitable for daily usage and extremely air-tight.
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Less air loss means having to inflate less.
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Only high elasticity and good quality bicycle inner tube has the capability to cover many bike tire sizes.
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AV 4 : 16 x 1-3/8, 1.10-1.40", 18x1.10-1.35" (37-340 to 37-349, 28-355 to 35-355), Schrader
Technical Information
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Weight: 85g
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Colour: Black
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Wheel Size: 16"
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Width: 1 1/4 x 1 3/8”
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Valve: Schrader