20x4.0 inner Tube with straight Valve

List of compatible tyre sizes

These bicycle inner tubes are designed to be fitted to large 20-inch tyres.

If the size printed on your tyre sidewall appears in the list below, you can order these inner tubes with complete confidence.

• 20x4.0 (98-406)
• 20x4.0 (100-406)
• 20x4.0 (102-406)
• 20x4.0 (103-406)

Can’t see your tyre size in the list above? In that case, these inner tubes are not compatible with your bike. Have a look at our other 20-inch inner tubes.

Use

This pack of two 20x4 inner tubes is made for extra-wide tyres. They’re ideal for everyday electric fatbikes (urban Super73-style bikes and similar), as well as leisure and off-road models, compact cargo bikes and other big-wheel rides running 20-inch fat tyres. These tubes fit standard tube-type setups, making them a great choice both for replacements and as spares, whatever your riding style.

Materials and performance

Made from premium butyl rubber, these 20-inch inner tubes deliver:

• Excellent air retention, so your tyres stay inflated for longer.
• Enhanced resistance to punctures, pinch flats and abrasion typical of fat tyres.
• Smooth, stable rolling for improved comfort on roads and tracks alike.
• Quick, straightforward installation, with a Schrader valve suitable for 20x4.00 rims.

Perfect for getting you back on the road quickly after a flat, these 20x4 inner tubes let you ride with confidence day in, day out and on weekend adventures. Keep a spare pair handy and enjoy your commutes and rides without the hassle of unnecessary downtime.