Stans Stan's No Tubes MTB Tubeless Kit (21 mm tape) Size: 21 mm

This kit includes everything you need to replace the inner tubes in your tubeless ready rims and tires with genuine Stan’s sealant--the original, and still the best tubeless tire sealant. All Mountain Bike Tubeless Kits include 200ml of sealant, 44mm brass valves, and Stan’s Yellow Tape. Kits are offered in different tape widths to fit a variety of rims. If you're unsure whether your rims are tubeless ready, look for graphics that mention it directly on the wheel or contact the manufacturer for details. Do not attempt to use a tubeless system on wheels that are not explicitly tubeless compatible. WHAT SIZE DO I NEED?: We recommend tape that is 1-2mm wider than the internal width of your rim to account for the drop channel. For example, a rim featuring a 28mm internal rim width would require the 30mm kit. We recommend going with the wider option if you rims falls in between sizes. HOW DOES IT WORK: Our simple tubeless system begins with our Yellow Tape. Unlike some tapes that allow mois