SRAM GX DH/X01DH 7 Speed Rear Derailleur B-Bolt and Limit Screw Kit MFPN=HCEN7375N }Shimano SM-JC41 Di2 Internal Frame

}Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port

The simplicity of a 1x drivetrain with the stability and compatibility of Hollowtech II technology

Cassette Body Type SRAM XDR Color Black Defined Color Black Hub/Brake Compatibility 6-Bolt Disc ISO Diameter 622 / road / 29" Rear Axle 12mm Thru x 157mm Rim Width (Internal) 28 Tire Type Tubeless Ready Valve Presta Wheel Size 29"

Compatible only with Hyperglide+ 12-speed chains

SRAM GX DH/X01DH 7 Speed Rear Derailleur B-Bolt and Limit Screw Kit MFPN=HCEN7375N }Shimano SM-JC41 Di2 Internal FrameSRAM GX DH X01DH 7 Speed Rear Derailleur B Bolt and Limit Screw Kit. Upper Bolt and Spring kits for SRAM rear derailleur maintenance and repairs.