Trek Road Bike Rear Hanger - W315464
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Product Information
Full details
The Trek Road Bike Rear Hanger W315464 is a essential component for owners of Trek road and performance hybrid bicycles manufactured between 2013 and 2017. Designed to act as a sacrificial link between your frame and rear derailleur, this hanger protects your bicycle frame from costly damage during an impact or derailleur strike. While it is a high-quality, durable replacement part, users should note that the necessary attachment hardware is not included with the hanger and must be sourced separately.
All features
| Model Part Number | W315464 |
|---|---|
| Brand | Trek |
Extended Product Information
FAQs
Is this hanger compatible with my 2019 Trek Domane?
No, this specific part is designed for models manufactured between 2013 and 2017. Please check your serial number or contact customer support for current model compatibility.
Does this package include the bolts to attach it to the frame?
No, the attachment hardware is sold separately. You will need to retain your original bolts or source them separately.
Will this fit an Emonda ALR model?
Yes, this hanger is compatible with the Emonda ALR, as well as the S, SL, and SLR iterations from the 2013-2017 production years.
Can I straighten a bent hanger instead of replacing it?
While minor adjustments can sometimes be made with an alignment tool, once a hanger has been significantly bent, the metal is weakened and it is always safer to replace it to prevent failure under load.
Why is the hanger designed to bend?
The hanger is designed to be the 'weakest link' in the drivetrain system. By bending during an impact, it prevents the derailleur from punching through the frame, saving the much more expensive bicycle frame from permanent damage.
Troubleshooting
Poor or inconsistent shifting after replacement
The new hanger may need fine-tuning with an alignment gauge to ensure it is perfectly parallel to the cassette.
Mounting bolts do not fit
Verify that you are using the correct original hardware; note that this hanger does not come with mounting bolts included.
Hanger feels loose after installation
Double-check that the hanger is seated correctly in the frame dropout and that the mounting bolts are tightened to the manufacturer's specified torque settings.
Pros and Cons
Pros
- Protects the expensive carbon or aluminum frame from derailleur-related impact damage
- Essential for riders using 2013-2017 Trek road and hybrid models
- Restores precise derailleur alignment after accidental knocks
- Compact and easy to transport as a spare
Cons
- Attachment hardware is sold separately
- Not compatible with all Trek models outside the 2013-2017 manufacturing window
- Requires proper alignment tools for optimal installation
Setup, Compatibility & Care
Before installation, ensure you have the required attachment hardware, as it is not included with this part. To install, remove the damaged hanger using a hex key, then secure the W315464 to the dropout, ensuring it is flush against the frame surface. Once attached, reinstall your rear derailleur and check the shifting limit screws. Given the frame material, avoid over-torquing the mounting bolts. If your shifting remains imprecise after installation, use a derailleur hanger alignment gauge to check for proper geometry. Regularly inspect the hanger for signs of bending if your bike has sustained any impacts.