Shimano SL-R400 Downtube Shifters Braze-on / 8 Speed Shimano model SLR400. Fitting for braze-on downtube shifter mounts. Shimano GRX ST-RX810 Hydraulic Disc Brake / STI Levers - 2 x 11 - Flat Mount. Campagnolo Centaur Power-Shift Ergopower Levers 11 speed - Black.