Description: Aftermarket 100% brand new. CNC machined,made of high quality alluminium alloy for durability and long time use. Cover the tank to prevent the gas from evaporating. Easy Installation( bolts is not included ),this item will make your motorcycle unique and special. Fitment: For BMW G310R 2017-2018; For BMW G310GS 2017-2018 Specification: Matetial: Alluminium Alloy Color: Black Size(L x W ): Approx. 55 x 35 mm / 2.16 x 1.37 inch Package Includes: 1 Piece Brake Reservoir Cover Note: 1.Please ensure that the product size can fit for your motorcycle properly before your payment