These work great with the 104 BCD Elliptical 32t ring

How handy is that

Allows for 180mm rotors on 160mm post mounts

Material: aluminium

Garbaruk Rear Derailleur Cage - Black - Shimano RD-M7000-M8000-M9000 Do Not Ship Internationally These work great with theIncrease the capacity of your SRAM or Shimano 11 speed derailleur up to 50T with these precision machined derailleur cages from Garbaruk. This derailleur mod will position your jockey wheels in the optimum position to provide maximum chain wrap in the smaller cogs, whilst also ensuring sufficient clearance to ensure smooth shifting to and from the largest cogs. Recommended Installation Options: SRAM derailleur: (10 46 and 10 48T cassette) Garbaruk RD