At DMG Motorsports, we present the EBC MD873 Street Rotor, a direct-size replacement for select 2021–2023 Triumph Bonneville Bobber Black 1200cc twin-disc front applications. This standard rotor combines EBC’s low-carbon HPSR steel construction with precision manufacturing, hardened and ground braking surfaces, and a corrosion-resistant nickel coating. The MD873 also uses EBC’s patented SD square-drive button system for dependable street performance. ([jsdmachineworks.com](https://jsdmachineworks.com/ebc-21-23-triumph-bonneville-bobber-black-twin-disc-1200cc-front-left-right-standard-brake-rotor-md873/))

Features:

• Fits 2021–2023 Triumph Bonneville Bobber Black 1200cc twin-disc front applications
• Direct size-for-size replacement for the OEM rotor
• Manufactured from EBC low-carbon HPSR steel
• Heat-treated stainless steel rotor construction
• Laser and CNC punched for reduced weight
• Hardened and ground for precision braking
• Diamond-ground for accurate surface finish and parallelism
• Nickel coated to help resist corrosion
• Patented SD square-drive button system
• Standard street rotor design with a high-friction braking blade

Fitment