Fitting to rear mech hanger, holds chain tension in set position.
No springs = no flapping about. This in turn means you can fit and forget, no need to make sure your spring loaded system is keeping up!! Won't move around and ding your frame either! Bonus!
Features replacement QR nut and fixing bolt. Sealed bearing wide roller allows wide range of easy fitment positions.
Lightweight alloy body.
Hard anodised black finish.
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