Amazon.com : MEGHNA Shimano Groupset 12 Speed MTB Bike Rear Derailleur RD-M6100-SGS 12 Speed Right Shifter Lever SL-M6100-R 12 Speed for Mountain Bike : Sports & Outdoors
Amazon.com: Box Two Prime 9 X-Wide Multi Shift Groupset: Unlock Unparalleled Performance and Reliable Shifting for Your Mountain Bike Components : Automotive
Amazon.com : SHIMANO Deore XT FC-M8130 Super Boost+ Crankset - 165mm, 12-Speed, 1x, Direct Mount, Hollowtech II Spindle Interface, Black : Sports & Outdoors