GRAVELATOR MASTERframe Gravelator Carbon x1 R6980 fork Gravel Carbon Fork F18 w mount derailleur Shimano GRX Di2 RX827 12 SGS shift levers Shimano GRX RX825 RX820 2 Piston brake disc front Shimano CL700 CL 160 freeza brake disc rear Shimano CL700 CL 160 freeza wheelset DT GRC LOG CARBON CL 100 12TA 622x24TSS TLR DT GRC LOG CARBON CL 142 12TA 622x24TSS ASL12R TLR tire front Maxxis Reaver Hypr X Exo TR 45 622 tire rear Maxxis Reaver Hypr X Exo TR 45 622 handlebar KTM