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Specifications

  • Hanger Number: 303
  • Material: CNC-machined 6061 aluminum
  • Finish: Black anodized
  • Origin: Made in USA
  • Fits: Cannondale (replaces KP419, K33049)
  • Axle Thread: M12x1 single-lead
  • Not Compatible: 2019+ SystemSix Speed Release (double-lead)
  • Hardware: Not included
  • MPN: DROPOUT-303

FAQ

What bikes does the 303 hanger fit?

It fits Cannondale frames that use the 303 hanger and replaces Cannondale part numbers KP419 and K33049. Because manufacturers sometimes change hangers mid model year, confirm against the product photos before ordering.

Does it work with the 2019+ SystemSix Speed Release axle?

No. The 303 is for M12x1 single-lead threaded axles. It is not compatible with the Speed Release axle on the 2019 and newer SystemSix, which uses a double-lead thread.

Does it come with mounting hardware?

No. Attachment hardware is not included with this hanger.

What is it made of?

It is CNC machined from 6061 aluminum with a black anodized finish, made in the USA, and runs stiffer than almost any OEM hanger for more consistent shifting.

Best For

Best for Cannondale owners who need a stiffer, better-shifting replacement hanger and a smart spare for race day. Fits frames using the DROPOUT-303 hanger with M12x1 single-lead threaded axles.

Wheels Manufacturing Derailleur Hanger - 303 Reviews:

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