Shopping Cart

Your cart is empty.

Your cart is empty.

Derailleur Hanger 21 (RE78E), Compatible with Giant Anthem, Boulder, Cypress, Glory Series, Trance, Sedona, Rainier, Rincon, Kona Type I Dropout

5.0 Write Review
Free shipping on orders over $29.99

$14.95

$ 6 .99 $6.99

In Stock

About this item

  • HOW TO CONFIRM THE DERAILLEUR HANGER YOU NEED? Identify Your Bike Frame by:: BRAND AND MODEL: Check the manufacturer and model of your bike. Many brands have specific derailleur hangers designed for their frames.
  • YEAR OF MANUFACTURE: Some models change hanger designs over time, so knowing the year can help narrow down the options.
  • If unsure this is the right part, please contact us
  • INCLUDES MOUNTING FASTENER: M8 Chainring Bolt
  • INSTALLATION: Recommended to check rear dropout alignment before installation. If not Aligned. Derailleur Hangers will continue to break until Rear Frame Dropouts are aligned


Derailleur Hanger 21 is a replacement dropout designed to connect your bicycle's rear derailleur to the frame. It is precision-engineered to ensure compatibility and proper alignment, providing smooth and accurate shifting.
Key features include:
* Material: Lightweight and durable aluminum alloy.
* Compatibility: Designed for specific bike brands and models; fits frames with bolt-on derailleur hangers.
* Shape: Unique profile tailored for optimal performance with designated frame geometries.
* Finish: Polished finish.
Note: Always verify compatibility with your bike frame model and derailleur type before purchase.