Sunrace RDMX60 Rear Derailleur (Black/Silver) (11/12 Speed) (Medium Cage)

Sunrace RDMX60 Rear Derailleur (Black/Silver) (11/12 Speed) (Medium Cage)
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Price: $94.99


  • Medium Cage
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Sunrace RDMX60 11/12sp Rear Derailleur.
  • Alloy cage with adjustable chain stabilizer
  • Forged alloy links
  • 14t lower pulley and 12t upper pulley
  • Max rear sprocket is 50t with 1X setup; 42t with 2X
  • 10/11/12 speed compatible
Model: RDMX70
Speed: 11/12sp
Cage: medium
Min Max: 10/40t
Capacity: 46t
Weight: 283g
Color: black
Verified Owner
Saturday, Jun 8 2019 (about a year ago)
Sunrace RDMX60 Rear Derailleur (Black/Silver) (11/12 Speed) (Medium Cage)
Aaaabsolutley rubish.
B-screw tension plate cracked completely (I believe on the first climb) and later bent/twisted on the descent. Horrible design. Don't buy this product, or at least not the mx version. Buy the top-end ms, or an mz. Actually, just spend the extra 30$ and get a gx derraileur. If you're planning to use this with a hyper-high range 10 of 11 speed cassette, I seriously don't recommend it. Wasn't given a refund, sunrace customer service sucks. "David" from Napa, CA sunrace corporate, told me he'll ship it np, will be expedited from Taiwan. Two days later tells me the entire factory is on vacation for a Taiwanese holiday.