 
 
 

Shimano Deore XT SM-RT81 Disc Rotor Features
 Shimano Deore XT SM-RT81 Center Lock Disc Rotors 
  - Shimano Deore XT SM-RT81 Center Lock Disc Rotors
- 3-layer structure with aluminum core and two stainless steel outer layers reduces rotor surface temperature approximately 100 degrees Celsius compared to all-steel rotors
- Aluminum spider
- Includes standard type rotor lockring
- Requires external-type rotor lockring when installing onto 15/20mm axle hub
                  
                    
                    
                      Product Information
                    
                  
                  
                
                Product Information
| Hub/Disc Compatibility | Center-Lock Disc | 
| Pad Compatibility | All Pad Compounds | 
| Rotor Size (mm) | 180 | 
| Rotor Type | Two Piece | 
| Weight | 141 | 
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