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 Truly all-season in nature

Truly all-season in nature

you can track and record performance data without extra external sensors

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

Lazer Grip

Perfect for Paris-Roubaix

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 Truly all-season in natureBox'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