BOX Four Rear Derailleur - 8-Speed Medium Cage Black ModelNumber=E2131 }Bosch Compact Charger - 2A

}Bosch Compact Charger - 2A eBike System 2

Chromoly chainring bolts

Length (mm) 50 Material Aluminum Defined Color Black Valve Core Fixed Valve Presta Med 41-55mm

Mirror technology inserts to provide additinal sit bone relief

BOX Four Rear Derailleur - 8-Speed Medium Cage Black ModelNumber=E2131 }Bosch Compact Charger - 2APrime 9 Technology for less derailleur travel and better chainline. Less wear and improved lifespan Box One features: Adjustable Tri Pack limited slip clutch, forged inner and outer cage, Pivot Tech cable stay, sealed bearing pulleys and 3D forged linkages Box Two features: Tri Pack limited slip clutch, forged inner and outer cage, Pivot Tech cable stay, sealed bushing pulleys and 3D forged linkages Box Three features: Limited Slip Clutch, stamped