Shimano GRX WH-RX870 Carbon DB Tubeless Gravel Wheel Set FREE shipping within Australia over AU$200.00 In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button... Shimano GRX WH-RX870 Carbon DB Tubeless Gravel Wheel Set FREE shipping within Australia over AU$200.00 In stock. Available via Click and Collect or Buy Online Share Loading Facebook Like button...