Stages Right Side Power Meter Battery Door Description: This Stages Right Side Power Meter Battery Door replaces broken, worn, or missing battery doors found installed on right side versions of Stages Power Meters for Shimano Ultegra 8100 and Dura-Ace 9200 12-speed double cranksets. Features: Genuine Stages Replacement Parts Battery door for Shimano Ultegra and Shimano Dura-Ace versions of Stages right side power meters Specifications: Color: Black Compatibility: Gen 3. Stages Ultegra 8100/Dura-Ace 9200 right side power meter arms