Interchangeable lens: Yes

Cylindrical Carbonic-x anti-fog lens for clarity and impact resistance

Compatible with common external BBs and 16-notch centrelock rotors

Cassette compatibility: Shimano HG and SRAM XD type cassettes

If your vehicle has a 50mm hitch receiver the Holdup is an excellent option for carrying anything from a 20" wheeled BMX to a 29" Enduro machine

Shimano RT-EM600 eBike Centerlock Internal Serration Disc Brake Rotor - 203mm - Centrelock Do Not Ship Internationally Interchangeable lens: YesThe Shimano RT EM600 eBike Centerlock Internal Serration Disc Brake Rotor is an eMTB rotor that is purposely made for Shimano's STEPS System. They deliver powerful and consistent braking performance in all riding conditions by using 'Shimano's Ice Technologies Freeza' feature that greatly improves heat dissipation and ensure consistent high performance braking even on the steepest downhill stretches. They even have a cleverly placed Speed Sensor