MAHLE SmartBike Systems X20 Freewheel Set - SRAM XDR Steel Model=Trek Thru-Shaft Rebuild Kit Unidirectional carbon fiber crank arms

Unidirectional carbon fiber crank arms titanium axle and aluminum chainrings

}Osprey Katari 3 Mens Hydration Pack - One Size Black

Color Black Rings 46/30 Number of Chainrings Double Crank Length (mm) 175 Crank Intended Use Gravel Drivetrain Speeds 11 Drivetrain Speeds 12 Weight 720 BB Included No Pedal Spindle 9/16" Spindle Interface Type 386 EVO Chainring BCD Direct Mount FSA Chainring BCD 90 Chainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm Chainstay Defined Color Black

The dual density cap on the knee distributes forces over a greater area during major impacts

Spindle length: 58

MAHLE SmartBike Systems X20 Freewheel Set - SRAM XDR Steel Model=Trek Thru-Shaft Rebuild Kit Unidirectional carbon fiber crank armsMAHLE SmartBike Systems X20 Freewheel Set SRAM XDR Steel. Replacement freehub bodies for Mahle X20 ebike motors. Mounting nuts included