The Royal Enfield 594045/A Rear Disc Plate is a genuine OEM brake component used in the rear wheel and disc-brake assembly of compatible Thunderbird motorcycles.
Royal Enfield parts catalogue data identifies 594045/A as “NT51 REAR DISC PLATE” and lists the same part number for both Thunderbird 350 and Thunderbird 500. The rear disc plate is secured to the rear wheel assembly with the specified M6 socket-head screws and works with the rear caliper assembly.
This brake disc is suitable for replacement when the original rear disc is worn, damaged or requires replacement during brake-system servicing or motorcycle restoration.
Key Features
- Genuine Royal Enfield OEM spare part
- Part Number: 594045/A
- Description: NT51 Rear Disc Plate
- Rear brake disc / rotor
- Designed for Thunderbird 350 and Thunderbird 500
- Compatible with the NT51 rear-wheel assembly
- Works with the rear disc-brake and caliper system
- Suitable for brake repair and restoration
- OEM factory specification
Compatibility
- Royal Enfield Thunderbird 350
- Royal Enfield Thunderbird 500
- Thunderbird NT51 rear disc-brake applications
The Thunderbird 350/500 parts catalogue explicitly lists 594045/A – Rear Disc Plate for both engine variants.
Important: This is the rear brake disc plate only, not the complete rear wheel or rear caliper assembly. Match part number 594045/A and the existing rear-wheel configuration before ordering.
Application
Rear Brake System / Rear Wheel / Disc Brake Rotor
Package Contents
- 1 × Royal Enfield 594045/A Rear Disc Plate









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