Product Description

S31 Locknut for YT D778 Derailleur hanger

Fits YT frames:

  • YT JEFFSY CF 2016-2018 
  • YT JEFFSY AL 2016-2019 
  • YT CAPRA CF 2018-2019 
  • YT CAPRA AL 2018-2019 


  • M16X1 left hand outer thread
  • M12X1.5 axle thread
  • 8mm hex socket
For any questions please e-mail us:
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To be sure if this the right part, please send us photos of:
1. Your derailleur hanger from both sides;
2. And if possible bike‘s frame part photos, where dropout was attached.

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Shipping information
With UPS delivery worldwide 2-5 working days.
With POST delivery 1-4 weeks worldwide.
100% satisfaction guarantee
We have a 100% money back satisfaction guarantee policy.
Terms & Conditions
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