Derailleur Hanger Tech Help

  • Photograph and Email Us Your Hanger
  • Derailleur Hanger Anatomy
  • Instructional Videos
  • Warranty / Returns

Step 1 - Take a few photos of the damaged derailleur hanger from both sides and the rear of your bike.

Hanger Help Dropout Photo Hanger Help Photo Bent Hanger Help Photo Hanger Help Dropout Photo Hanger Help Dropout Photo

Take a photo of the damaged derailleur hanger from both sides and the rear of your bike. If you hanger broke in to two or more pieces, re-assemble it the best you can. If you need help re-assembling your hanger, click the Derailleur Hanger Anatomy tab above for some help.

Step 2 - Take a photo of the frame's rear dropout from both the outside and inside with the hanger removed.

Hanger Help Dropout Photo Hanger Help Dropout Photo

Take a photo of the frame's rear dropout from both the outside and inside with the hanger removed.

Step 3 - Fill out the form below.

Use the image selector buttons to attach your images.

Items marked with '*' are required.

Attach images. Allowed types are jpeg, gif, png, tiff, bmp.


If you have difficulty in reading the characters above then refresh your browser.

Key Features to Help Identify Your Replacement Hanger

Hanger Anatomy


The replacable derailleur hanger is secured to the bike's frame using a fastener or fastener. A hanger can use up to 4 fasteners, but most hangers use one or two.

Axle/Hub Socket

The socket where the rear hub sits when the rear wheel is properly inserted and secured in the frame.

Rear Derailleur Hole

10mm x 1 threaded hole where the rear derailleur is attached to the hanger

Rear Derailleur B-Screw Tab

This tab is an important feature on any hanger and allows for the rear derailleur pulley clearance to be set. The flat side of the tab always faces towards the rear of the bike.

 Dropout / Hanger Notes

Derailleur Hanger Derailleur Hanger Hanger Help Dropout Photo Derailleur Hanger
Inside Dropout Outside Dropout Pocket for Hanger Hanger with Chainring Bolt
Style Fastener
  • Note the orientation of the hanger on the frame. The hanger shown on the white frame attaches to the frame from the inside. The hanger on the black frame attaches to the frame from the outside.
  • Fasteners shown here on the white frame are M3 x 8, and are inserted through the frame and threaded in to the hanger. Make a note if your hanger is threaded for the fasteners, or if your frame is threaded.
  • The hanger on the black frame uses a chainring style nut and bolt. Hangers using a chainring bolt typically place the nut on the inside of the dropout and the bolt on the outside of the dropout (as shown).
  • The third photo to the left shows the pocket machined in the frame's dropout where the hanger sits.

Derailleur Hanger Identification and Replacement


Wheels Mfg. utilizes the most advanced computer modeling and modern CNC machinery to accurately produce replaceable derailleur hangers, fitting thousands of bikes.  Finding the correct model to fit your bicycle can be challenging, but we can help.


All Wheels Mfg. deraileur hangers have a 2 year warranty against manufacturing defects and are 100% guaranteed fit. 

Extent of Limited Warranty

This warranty only applies to the original owner and is not transferable. Claims under this warranty must be made through the retailer where the Wheels Mfg component was purchased. Original proof of purchase is required. 

Wheels Mfg will refund defective products at our discretion.

Limitations of Warranty

This warranty does not apply to products incorrectly installed and/or adjusted according to the respective Wheels Mfg installation instructions/owner manual. Failure to use correct installation or removal tools will result in damage not covered by warranty.

This warranty does not apply to damage to the product caused by crash, impact, abuse of the product, or unusual installations resulting in subjecting the product to excessive forces or loads beyond its design.

This warranty does not apply when the product has been modified.

This warranty does not apply to normal wear and tear. Wear and tear parts are subject to damage as a result of normal use, failure to service according to Wheels Mfg recommendations, and/or riding in conditions or applications other than recommended.

We no longer offer exchanges for products purchased through Wheels Mfg. Authorized Resellers. If the product was purchased from an internet seller or local bike shop, please return the product to them for exchange or refund.


We accept returns or refunds only if purchased directly from us.

  • Wheels Mfg will refund products purchased directly from at our discretion.
  • New and Unused items may be returned in their original packaging up to 30 days from the date of purchase for a refund.
  • We do not offer exchanges. Please submit a new order and return the original for a refund.
  • Refunds will be issued to the same payment method as the original purchase (credit card or PayPal), less original shipping charges and a small re-stocking fee.
  • Freight charges for items returned to Wheels Mfg. are the responsibility of the customer.

Submit a Warranty Return / Service Request