Yamaha R6 Rear Wheel Socket Tool. This new Graves tool is designed to be used during the installation of and the removal of the right side rear wheel bearing on the 2017 R6. This tool should be in any race mechanics tool box when working on the 2017 R6. It tightens and loosens the bearing retainer. The bearing placement is critical to keep the proper distance (air gap) from the rear wheel trigger ring and the rear speed sensor.