Nuetech TUbliss Gen 2.0 21in KitThe Nuetech Tubliss 2. 0 Kit replaces conventional inner tubes with a small red insert that creates two different pressure zones inside the tire itself. This enables an incredible 100 PSI of rim protection, increased tire stability, and eliminates pinch flats. The Tubliss system also allows you to run much lower tire pressures than you normally would with a standard tube. The lower tire pressure creates a larger contact patch, leading to greatly