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

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.

 Step 1

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 HERE for some help.

Step 2


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

Email us your photos from steps 1 & 2. If you do not have the damaged hanger, send photos from step 2.

Send photos, along with bike brand & model name to: customerservice@wheelsmfg.com

Please include your phone number and email address so we can contact you back.

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 replace or 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. The Wheels Mfg manuals can be found online at wheelsmfg.com. 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 accept products purchased through Wheels Mfg. Authorized Resellers for exchange only. For refunds, please return the product to that Reseller. 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. For a refund, a product must be purchased directly from Wheels Mfg. and must be returned in new condition with original packaging and receipt.

We strive to maintain accurate derailleur hanger fit information, but if you ordered the incorrect hanger from a Wheels Mfg. Authorized Reseller based on information on our website, we will exchange it for the correct hanger at no charge. Just email us (customerservice@wheelsmfg.com) or call (1-800-361-8422) for a Return Authorization number. Freight charges to Wheels Mfg. are the responsibility of the customer.

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