ZTTO Rear Derailleur Hanger Extender

Aluminium derailleur hanger extender that adds clearance for wide-ratio cassettes on road and mountain bike frames, built from 6061 aluminium at roughly 10g. Bolts directly onto the existing hanger for an easy install without frame modification. Available in several anodised colours. Suited to riders upgrading to a wider-range cassette than their frame's stock hanger was designed for.

Specifications