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The rear derailleur cage is the pivoting lower arm of the derailleur that holds the guide pulley and tension pulley, maintaining correct chain wrap around the cassette and chainring. On the SRAM GX Eagle Transmission derailleur, the cage works as part of SRAM's newer Transmission drivetrain ecosystem, which pairs with frames equipped with a Universal Derailleur Hanger (UDH) and does not use a traditional barrel adjuster or B-screw setup. This replacement cage is intended for the GX Eagle Transmission derailleur specifically, and is not interchangeable with older GX Eagle derailleurs that predate the Transmission platform.
Cage damage is one of the more common derailleur failures, typically resulting from a rock strike, a crash, or a chain-jam event. Replacing just the cage rather than the full derailleur is a cost-effective repair when the derailleur body itself is undamaged. Riders should confirm their derailleur is the GX Eagle Transmission version before ordering, as Transmission and non-Transmission GX Eagle derailleurs are distinct product lines and their cages are not shared parts.
If your GX Eagle Transmission derailleur body is still in good shape after a crash, replacing just the cage gets your bike shifting again without the cost of a whole new derailleur. This cage is designed specifically for the Transmission platform, so you can be confident it will fit and function as intended. It is a straightforward swap that keeps your existing drivetrain investment intact.
Our returns policy lasts 30 days. If more than 30 days have passed since your purchase, we're unable to offer a refund or exchange. Apparel and shoes are not eligible for return once they have been shipped out.
We accept returns if the item is eligible for a warranty claim or if the wrong item was shipped to you. To be eligible, your item must be unused, in the same condition you received it, and in its original packaging. A receipt or proof of purchase is required.
Please do not send your purchase back to the manufacturer. Once your return is received and inspected, we'll email you to confirm.
Only regular-priced items can be refunded. Sale items cannot be refunded.
We replace items only if they are defective or damaged. To exchange an item for the same one, email us at info@reevolution.sg and send the item to 16 Morse Road, #01-209, Singapore 099228.
You are responsible for the cost of return shipping, and shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from it. For valuable items, we recommend a trackable shipping service or shipping insurance, as we can't be responsible for returns we don't receive.
Once your return is received, inspected and approved, your refund will be processed to your credit card or original method of payment. A refund will also be issued if an item turns out to be out of stock after your order is placed. How long it takes to appear depends on your bank or card provider.
If you haven't received your refund yet:
If you've done all of this and still haven't received your refund, please get in touch.
Free standard delivery on orders SGD 80 and above within Singapore.
| Delivery option | Orders below SGD 80 | SGD 80 and above | Delivery time |
|---|---|---|---|
| In-store pickup | Free | Free | Collect in store |
| Standard delivery | SGD 5 | Free | 4–7 working days |
| Express delivery | SGD 20 | SGD 20 | Next working day |
Collect your order from our store at 16 Morse Road, #01-209, Singapore 099228.
Monday to Friday: 11.30am – 7pm
Saturday: 11.30am – 6pm
We ship overseas on request. Contact us with your address and the items you'd like, and we'll send you a shipping quote.
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