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A perfect blend of performance, versatility, and reliability, the Niner RLT e9 RDO 4-Star is built for gravel riding, adventure, and utility. With a gravel-optimized Shimano GRX drivetrain and powerful Bosch Performance Line CX motor, this e-gravel bike is ready for anything—from dirt roads to city streets. Key Features Shimano GRX Brakes & Drivetrain: Featuring flat-mount GRX brakes with custom Niner adapters for compatibility, plus Boost-spaced GRX drivetrain for integration with mountain bike components. Bosch Performance Line CX Motor: Propels up to 28 mph (25 kph in the EU) with a 500Wh battery, offering smooth, reliable pedal assist over long distances. Versatile and Durable Design: This carbon frame passes ISO mountain bike standards, thanks to Niner’s rugged RDO construction and a robust carbon backbone bonded to an alloy motor mount. Flexible Setup Options: Designed for flat bar compatibility, with Boost hub and crankset spacing for MTB part interchangeability, plus compatibility with a FOX AX suspension fork and dropper seatpost routing. Adventure-Ready Build: Equipped with custom Niner racks, clearance for 50c tires, and fender mounts for ultimate adaptability in any environment. Specifications Frame: RLT e9 RDO Carbon Fork: Niner RDO Carbon Headset: Niner Integrated IS42/28.6 | IS52/40 Brakes: Shimano GRX 400, RT-EM81 180mm CL rotors Shifters: Shimano GRX 600 Crank: Praxis Bosch G4 ISIS 42T Motor: Bosch Gen4 Performance Line CX, 28mph Battery: Bosch Powertube 500Wh Display: Bosch Purion Cassette: Shimano SLX M7000 Rear Derailleur: Shimano GRX 800 Chain: Shimano CN-E8000 Wheelset: Stan’s NoTUBES Arch D Tires: Schwalbe G-One Speed Performance 700x50c Handlebar: Easton EA50 AX Stem: Niner Alloy Seatpost: Niner Carbon Saddle: Niner Custom with Cr-Mo rails