The Positz Value Bundle 20 x 2.125 (54-406) combines two reliable 20 inch bike tyres with two thorn resistant tubes, giving you a simple and cost effective way to refresh your wheels. This bundle suits BMX bikes and kids bikes that use the common 20 x 2.125 size and want dependable everyday performance. If your tyres are worn and your tubes are tired, this kit gets everything sorted in one go.

Replacing tyres and tubes at the same time saves time and avoids the hassle of pulling a wheel apart again later. The included thorn resistant tubes add an extra layer of protection against punctures, which can make a noticeable difference on bike paths, footpaths and areas where thorns, glass or debris are common.

Who are these 20 inch bike tyres and tubes for?

Ideal for riders who want a practical and affordable way to replace both tyres and tubes on a 20 inch bike. This bundle suits BMX riders, kids bikes, folding bikes and anyone maintaining a bike that uses 20 x 2.125 tyres. The thorn resistant tubes are especially useful for riders who regularly deal with punctures from thorns, small glass fragments or rough paths.

Who are these not for?

This bundle is not designed for riders chasing lightweight race setups or specialised performance tyres. Thorn resistant tubes are slightly thicker than standard tubes, so riders focused purely on weight savings or high level racing may prefer a lighter option.

Why we love it

We like this bundle because it solves two problems at once. Fresh tyres improve grip and ride feel, while thorn resistant tubes help reduce the chance of annoying punctures. It is also simply good value. Buying everything together is usually cheaper than purchasing each item separately, and it saves the hassle of making sure you have all the parts you need.

Hot tip!

When installing thorn resistant tubes, inflate them slightly before fitting them inside the tyre. This helps prevent twists or pinching during installation and makes it easier to seat the tyre evenly on the rim.

Item specs

• Brand: Positz
• Bundle contents: 2 tyres + 2 thorn resistant tubes
• Tyre size: 20 x 2.125
• ETRTO size: 54-406
• Wheel compatibility: Standard 20 inch rims
• Recommended tyre pressure: 40 PSI (280 kPa)
• Maximum load: 75 kg per tyre
• Tyre colour: Black tread and black sidewall
• Tube type: Thorn resistant
• Tube valve type: Schrader
• Valve length: 35 mm
• Compatibility: BMX bikes, kids bikes and other 20″ bikes