Dynaplug Carbon Ultralite Racer - MTBThe lightest Dynaplug yet, the Racer Ultralight uses tough glass reinforced injected nylon construction to get the racer's already low weight down to a barely there 14 grams. Also included is a custom silicon holder, tested for a year in the back country of California and the UK, this lightweight mount fits under your bottle cage and holds your racer securely and rattle free. Dynaplug is the fastest, easiest and all round best way to repair a tubeless