When Yeti engineers work with Shimano to design an interchangeable dropout system you know the results are going to be nothing but the best. This easy to install 12 x 142mm chip set will give you a lever of stiffness and precision handling that is impossible to get from any 135mm quick release. Not to mention the easy removal and replacement of the rear wheel. You can't go wrong with this upgrade. Keep in mind that you will also need the axle and a 12 x 142mm rear wheel.