26x4.0 inner Tube with straight Valve

List of Compatible Tire Sizes

These inner tubes are made to fit extra-wide 26" fat-tire bikes.

If the size printed on your tire’s sidewall matches one of the sizes below, you can order with confidence.

• 26x4.0 (97-559)
• 26x4.0 (98-559)
• 26x4.0 (100-559)
• 26x4.0 (102-559)
• 26x4.0 (103-559)

Don’t see your tire size in the list above? Then these tubes won’t fit your bike. Check out our other 26" inner tubes.

Ideal Use

This 2-pack of 26" inner tubes is built for extra-wide 26x4.00 tires. It’s a great replacement for electric and non-electric fat bikes, as well as cruisers, custom builds, and utility bikes running 26x4.00 balloon-style tires.

Ride with confidence on pavement, trails, sand, snow, or any soft/loose terrain. These tubes work with standard tubed (tube-type) setups and can also be used as a backup tube inside tubeless tires when needed.

Materials and Performance

Made from premium butyl rubber, these 26" inner tubes deliver:

• Excellent air retention for dependable pressure ride after ride.
• Enhanced resistance to punctures, pinch flats, and abrasion common with fat-tire riding.
• A smooth, stable feel at the lower pressures typical for fat bikes—on or off road.
• Quick, easy installation with a Schrader valve that’s convenient to inflate anywhere.

Designed specifically for 26x4 fat tires, these tubes are ready for daily riding and bigger adventures. Pavement, trails, sand, snow—wherever you ride, you’ll have a reliable spare on hand to fix a flat fast and get back rolling without cutting your ride short.