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FYI R7000 105 CS-HG700 11-34 cassette

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FYI R7000 105 CS-HG700 11-34 cassette

Old 12-07-18, 05:11 PM
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jmess
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FYI R7000 105 CS-HG700 11-34 cassette

I spent a couple hours going in circles after moving a new bike's 105 11-34 cassette to a different rear wheel. I didn't realize there was a spacer ring on the original wheel hub. As a result the cassette wasn't tight enough and the rear derailleur shifting was totally wacky. It wasn't until I used a micrometer to measure the hub length on both rear wheel hubs that I found the spacer. So if you try and install a CS-HG700 11-34 cassette on a road hub you need the spacer (same size as 10 speed). If you install the cassette on a mountain bike hub you don't use the spacer. I think this is the only Shimano cassette like this. I think the new 8000 Ultegra 11-34 is normal.

HG Cassette Sprocket (11-speed)
  • FEATURE
  • Removable spacer for compatibility with MTB hub body

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Old 12-08-18, 12:01 PM
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CliffordK
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Yes...

A feature that Shimano introduced with the large sprocket cassettes allowing them to be used on 10s hubs.

And, most MTB freehubs still use 10s compatibility.
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Old 12-09-18, 11:33 PM
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CS HG800 cassettes have an additional spacer also. Pictures are included in this thread:
Anyone 11-speed road bikers... new HG700 11x34
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Old 12-10-18, 10:17 AM
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Sunrace 11 speed MTB cassettes are like this too
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