The Shimano GRX Di2 electronic groupset components from the RX815 and RX817 Gravel series, available in 1x11-speed and 2x11-speed versions
Shimano GRX Di2 shift/brake lever set ST-R815, STI Dual Control, right-left set, 11-speed, GRX disc brake calipers BR RX810, Flat Mount, cables 100 and 170 cm
Shimano GRX Di2 shift/brake lever set STRX815, STI Dual Control, right-hand 11-speed, brake lever BLRX810 left-hand GRX disc brake calipers BRRX810, Flat Mount, cables 100 and 170 cm, without discs and adapters
Shimano spare part: tension spring seal, p-seal ring for the tension spring of the Dura-Ace R9100, Ultegra RX80 / R8000, GRX RX815/12/10/20 and XTR M9120 / M9000 rear derailleurs