Xq54 Postmount to Flatmount Rear Brake Caliper Adapter
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Description
Upgrading or converting your disc brake setup shouldn't mean compromising on braking performance. The Alligator Xq54 Postmount to Flatmount Rear Brake Caliper Adapter bridges the gap between older postmount frames and modern flatmount calipers, giving Indian cyclists a clean, affordable solution to run contemporary brake hardware on existing framesets.
Use Cases
Daily training. Reliable use across Indian training conditions — heat, humidity, and rough tarmac.
Race day. Performance-grade construction for competitive efforts.
Long rides. Built for full-day rides across Western Ghats, Sahyadri, or Nilgiri climbs.
Our Take
For riders in Pune, Hyderabad, or Chennai looking to future-proof a capable frame without replacing it entirely, this adapter is a practical, well-made pick. Alligator's precision machining means the caliper sits true, which matters when you're scrubbing speed on a wet Lonavala descent or managing traffic braking in Delhi. At Rs. 1,030, it is one of the most cost-effective compatibility upgrades you can make to a disc brake bike.
Sizing for Indian Riders
This is a rear-specific adapter converting postmount frame mounts to flatmount caliper mounting. It does not carry a body size — order based on your frame's rear brake mount standard (postmount) and your caliper's standard (flatmount). Confirm your rotor diameter compatibility separately. Sizing advice for clothing does not apply here.
Compatibility Notes
Designed to convert a postmount rear frame interface to accept a flatmount disc brake caliper. Verify your frame uses a standard postmount rear dropout and that your caliper is a flatmount design before ordering. Use appropriate mounting bolts torqued to the caliper manufacturer's specification. Works across road, gravel, and commuter framesets with postmount rear tabs.
Pairs Well With
Complete your brake system upgrade by pairing this adapter with a quality flatmount disc brake caliper, compatible brake levers, stainless or resin brake pads suited to your rotor material, and hydraulic or mechanical brake hose and cable kits. Browse all options at Cobbled Climbs.
Explore the full Alligator collection at Cobbled Climbs
Specifications
| Specification | Detail |
|---|---|
| Brand | Alligator |
| Product Type | Brakes |
| Shipped From | Mumbai, India |
Explore the full Alligator collection at Cobbled Climbs
Why buy from Cobbled Climbs
- 100% genuine — authorised Alligator retailer in India
- Free delivery on orders above Rs. 2,500
- Cash on delivery available nationwide
- 7-day easy returns
- Shipped from Mumbai
- Expert advice — built for Indian cycling conditions
Frequently Asked Questions
What is the Alligator Xq54 adapter best used for?
The Alligator Xq54 is designed for cyclists who want to mount a modern flatmount disc brake caliper on a frame that uses a postmount rear brake tab. It is ideal for bike builders, upgraders, and mechanics working with older disc-ready frames in India who want to use current-generation flatmount calipers without changing the frameset.
Do I need to check any specifications before ordering this adapter?
Yes. Confirm your rear frame dropout uses a postmount interface and that your brake caliper is a flatmount design. Also verify rotor diameter compatibility. This adapter is rear-specific — do not use it on a front fork. If you are unsure of your frame's mount standard, check the manufacturer's spec sheet or contact Cobbled Climbs before ordering.
Will this adapter hold up in monsoon conditions and on rough Indian roads?
Brake adapters experience significant stress from vibration and braking forces, especially on rough surfaces around Pune or Hyderabad. Alligator engineers this adapter for durability under real-world use. Periodically check mounting bolt torque after riding in heavy monsoon conditions or on potholed roads to ensure nothing has loosened over time.
How does a postmount-to-flatmount adapter compare to simply buying a flatmount-native frame?
A new flatmount-native frame is a larger investment. This adapter lets you retain a capable postmount frame and run modern flatmount calipers at a fraction of the cost — Rs. 1,030 versus a frame upgrade running into tens of thousands of rupees. For most riders doing an incremental component upgrade, the adapter is the smarter, more budget-conscious choice.
Is the Alligator Xq54 worth the price, and does it come with a warranty?
At Rs. 1,030, the Xq54 is one of the most affordable ways to gain flatmount caliper compatibility on a postmount frame. Alligator is a well-regarded component brand with consistent quality control. For warranty queries specific to this product, contact Cobbled Climbs directly — our team can advise based on the manufacturer's current warranty terms.
Why pay full price when loyalty pays back?
Club House rewards you for every purchase — up to 5% cashback, 100 bonus points to start, birthday rewards, and early access to limited drops. It’s our way of saying thanks for riding with us.
Shipping:
We ship all orders within 48 hours, excluding Sundays and public holidays. Delivery typically takes 3 to 5 days depending on your location.
Returns:
If your item arrives damaged, incorrect, or doesn’t fit, you may request a return within 7 days of delivery. Email us at support@cobbledclimbs.com with your order details. Items must be unused and returned in original packaging with all tags and labels intact.
Sale Item Guidelines:
Products purchased on sale are final sale and not eligible for return or exchange. Please double-check sizing, fit, and product details before purchasing.
Please note:
We follow a no money refund policy. Eligible returns are offered store credit or exchange only.
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Earn up to Rs. 51.50 cashback with Club House
Xq54 Postmount to Flatmount Rear Brake Caliper Adapter
Earn up to Rs. 51.50 cashback with Club House
Frequently Asked Questions
Does Cobbled Climbs ship Xq54 Postmount to Flatmount Rear Brake Caliper Adapter across India?
Is the Xq54 Postmount to Flatmount Rear Brake Caliper Adapter on Cobbled Climbs 100% authentic?
What is the return and exchange policy for Xq54 Postmount to Flatmount Rear Brake Caliper Adapter?
Is Xq54 Postmount to Flatmount Rear Brake Caliper Adapter currently in stock?
What payment methods are accepted?
Does Xq54 Postmount to Flatmount Rear Brake Caliper Adapter come with a manufacturer warranty?
How do I find the right size for Xq54 Postmount to Flatmount Rear Brake Caliper Adapter?
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What We Reach For
When the ride calls, we don’t think twice. A jersey that’s made to move. A computer that knows the way. A care kit that keeps it all running smooth. These are the pieces we reach for — ride after ride.



