An extended derailleur hanger that adds 21 mm of length to the standard mount, giving clearance for a larger rear cog when running a bigger cassette than the frame was designed for.

Compatibility & fit

  • Fits all standard-mount derailleur hangers
  • Up to a 42T rear cog in a 1x setup
  • Up to a 40T cog with a Shimano standard-mount or SRAM derailleur used with a double or triple chainring crankset
  • Up to a 36T cog with a Campagnolo crankset

Hanger and fastener fitment is specific to the frame and the original hanger it replaces — match this part against the old hardware before ordering. The Tune workshop can fit and align a new derailleur hanger; alignment is a workshop service.

Covered by Wheels Manufacturing's 1-year limited warranty against manufacturing defects from the original date of purchase. It doesn't cover misuse, normal wear and tear, incorrect installation or crash damage. For warranty support, return the product to Tune Cycles and we'll manage the claim with Wheels Manufacturing's Australian distributor.
Material6061 aluminium, CNC-machined
Extension21 mm over the standard mount
Max cog (1x)42T
Max cog (Shimano/SRAM, 2x/3x)40T
Max cog (Campagnolo)36T
SKU SCV-WMDH-E
Brand Wheels MFG