microSHIFT Advent MX Pro Rear Derailleur - 10/11-Speed Clutched Repairable Aluminum Medium Cage 50t Max BLK/Silver MFPN=PML300-S11B00X } Built upon the stability

} Built upon the stability and accuracy of the RED AXS integrated power meter

Anodized aluminum crankarms Number of Chainrings No Rings Included Drivetrain Speeds 12 Chainline/Hub Compatibility 141/148 Boost Hubs Color Black/Silver Crank Length (mm) 160 Crank Intended Use Mountain Weight 560 BB Included No Pedal Spindle 9/16" Spindle Interface Type Shimano Hollowtech II Defined Color Black Size 160Mm

Excellent ventilation with 9 air inlets and 5 air outlets

Royal Blood mineral oil

microSHIFT Advent MX Pro Rear Derailleur - 10/11-Speed Clutched Repairable Aluminum Medium Cage 50t Max BLK/Silver MFPN=PML300-S11B00X } Built upon the stabilityThe goal of Advent MX was to create a group that would stand up to the hardest 10% of riders and the microSHIFT engineers delivered. The MX Pro rear derailleur features their most robust linkage ever with a beefy horizontal parallelogram IGUS bushings at the pivots and 33% stronger clutch force. What does that mean? Go ahead and huck to flat. With other creature comforts like sealed bearing pulleys and a fully replaceable aluminum cage assembly this