Shimano Ultegra SM-RT800-SS Disc Brake Rotor - 140mm, Center Lock, Silver

Shimano Ultegra SM-RT800 Center-lock Disc Rotors

Features:

• Freeza technology, 3-layer structure with aluminum core and stainless steel outer layers and additional aluminum cooling fins reduces rotor surface temperature approximately 150 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

Specifications:

• Rotor Type: Two Piece
• Hub/Disc Compatibility: Center-Lock Disc
• Rotor Size (mm): 140
• Weight: 108
• Pad Compatibility: All Pad Compounds