Sunrace components – Derailleurs and cassettes

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Sunrace components – derailleurs and cassette alternatives

Review by Lee Lau

I saw an ad for Sunrace components in some magazine in the newstand.   What initially caught my eye was the reference to Sturmey-Archer (the 100 year old company) which I found also distributed Sunrace components. In my mind, anyone associated with that lineage of history of quality could do anything but make high quality bike parts. I contacted Dave P at Sunrace’s US offices and in short order I had some Sunrace derailleurs and cassettes on hand to test.


The long-cage Sunrace derailleur


Design and Construction: Derailleurs

I had the long cage RDMZ and the mid cage RDMX. According to Sunrace they are XTR and XT-equivalent respectively. You can get the specs from the website links provided but here are some highlights

  • All 7075 aluminium construction
  • 9 speeds
  • 2:1 actuation ratio (ie Shimano compatible)
  • Carbon cage for the higher end RDMZ
  • Weight savings between the RDMZ (223g) and RDMX (236g) aren’t dramatic. Weights for long caged versions are cited
  • Both have the capacity to handle up to 34t sprockets
  • Adjustment hardware is all aluminium. No pesky plastic bits to strip
  • Both have sealed bearings at the pulleys

The long-cage Sunrace derailleur

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About the author: Lee Lau

Lee Lau calls North Vancouver and Whistler BC home. He's had over 15 years experience riding bikes mainly in western North America and in Europe. Unlike many people who learned to ride bikes on North Shore trails, he actually enjoys riding (and sometimes bushwhacking) uphill.

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