NEW BOX Three Prime 9 X-Wide Multi Shift Groupset - X-Wide Rear Derailleur, 11-50t Cassette, Multi Shift Shifter, Prime 9 Chain type_bottom-brackets The Shimano GRX ST-RX810 11-speed

The Shimano GRX ST-RX810 11-speed hydraulic shift/brake lever provides greater control on mixed terrain

you can track and record performance data without extra external sensors

Cool Stuff insole provides improved arch support

Lazer Grip

NEW BOX Three Prime 9 X-Wide Multi Shift Groupset - X-Wide Rear Derailleur, 11-50t Cassette, Multi Shift Shifter, Prime 9 Chain type_bottom-brackets The Shimano GRX ST-RX810 11-speedBox's Prime 9 Technology is a counter intuitive philosophy based on the less is more theory. It embraces range without adding complexity. The outcome is fewer parts, reduced weight, and increased durability. Prime 9 technology offers the same range as a 12 speed drivetrain, with fewer gears to shift through Fewer parts, reduced weight, and increased durability Prime 9 drivetrains significantly reduce the chain angle in the lowest gears, allowing the