Convert your existing wheels to tubeless. No Tubes uses a patented Rim Strip that makes installation simple. No Tubes also have two sealing points on the tires to ensure no loss of air, and a special tire and rim sealant. The new molded rim strip features a Presta valve stem with removable core, allowing you to add sealant without removing the tire. SRP is $138. www.interlog.com/~rbinc; www.spaso.com; www.cycleslambert.com; www.notubes.com