BikeTube

Fat / Plus TPU Tube 20 x 4.0 SV 40mm

The BikeTube Fat / Plus TPU Tube 20 x 4.0 SV 40mm is built for riders who want to drop serious rotational weight without sacrificing reliability. Swapping out heavy butyl for advanced TPU construction means a smoother, faster ride with fewer flats and less time pumping. Whether it’s powering through sand, snow, or singletrack, this tube delivers big performance gains for fat and plus-size tires.

• Ultra-lightweight TPU — over 70% lighter than traditional butyl tubes, saving up to 1.8 lbs per pair
• 50% stronger than standard butyl for increased puncture resistance and durability
• Superior air retention means fewer inflation stops and more time on the trail
• Includes 2 alcohol prep pads and 2 patches for quick, on-the-go repairs

Perfect for fat bike and e-bike riders who want to cut weight, roll faster, and ride longer between inflations, the BikeTube Fat / Plus TPU Tube is a smart upgrade that delivers noticeable performance from the first spin.