To upgrade Shimano 11-spd sprocket gear ratio with Relic 46T & 48T sprockets, which provide more cassette range to be compatible with Shimano 11-speed drivetrain for both SGS and GS, M8000(XT)/M9000(XTR), sprocket 11-40/42T; the 18T sprocket replaces 17T and 19T to make well-shifting in the cassette progression.  The new combination reaches the super mega range gear ratio for optimum performance.

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• Material: AL7075 T6 CNC machined (46T & 48T)
•               Chrome Steel (18T)
• Cassette progression:
• 11-13-15-18-21-24-27-31-35-40-46T
• 11-13-15-18-21-24-28-32-37-42-46T
• 11-13-15-18-21-24-28-32-37-42-48T
• Sprocket weight: 92g (+3)
• Compatibility: For XT/xTR 11-40/42T cassette.  11 speeds only
• Color: Green (46T)
•           Bronze Gold (48T)
•           CP (18T)