Red CNC Aluminum IS Mount Disc Brake Caliper Adapter R203
Red CNC Aluminum IS Mount Disc Brake Caliper Adapter R203
Red CNC Machined IS Mount Disc Brake Caliper Adapter
Upgrade or replace your bicycle's brake hardware with this precision-crafted IS Mount Disc Brake Caliper Adapter. Available in two configurations — IS F203/R180 and IS R203 — this bracket ensures accurate caliper alignment with your rotor for confident, consistent braking on every ride. Made in Mainland China.
Key Features
- CNC Machined Aluminum Alloy: Precision-milled from lightweight aluminum alloy for a sturdy, durable structure that holds up to regular mountain and road cycling demands.
- IS Mount Compatible: Designed specifically for International Standard (IS) brake mounts. Choose from two options to match your rotor size and bike setup.
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Two Options Available:
- IS F203/R180 — For front 203 mm rotors or rear 180 mm rotors. Approx. 86 × 30 mm; 51 mm and 74 mm center-to-center hole spacing.
- IS R203 — For rear 203 mm rotors. Approx. 95 × 42 mm; 51 mm and 74 mm center-to-center hole spacing.
- Supports Caliper Alignment: Positions your brake caliper correctly relative to the rotor, making it ideal for brake upgrades, worn-part replacement, and general brake system maintenance.
- Complete Hardware Included: Each package contains 1 adapter, 2 screws, and 4 washers — everything you need for installation right out of the box.
- Bold Red Finish: Anodized red color adds a sporty visual touch to your MTB or road bike build.
Specifications
| Item Type | Disc Brake Caliper Mount Adapter |
| Material | Aluminum Alloy (CNC Machined) |
| Color | Red |
| Mount Type | IS (International Standard) |
| IS F203/R180 Size | Approx. 86 × 30 mm |
| IS R203 Size | Approx. 95 × 42 mm |
| Hole Spacing | Approx. 51 mm and 74 mm (center to center) |
| Compatibility | MTB, Road Bike, and other IS mount bicycles |
| Country of Origin | Made in Mainland China |
Package Contents
- 1 × IS Mount Disc Brake Caliper Adapter
- 2 × Mounting Screws
- 4 × Washers
Notes
- Screen color settings may cause slight color variation from actual product.
- Please allow minor measurement tolerances (±1–2 mm) due to manual measurement.
- Always confirm your bike's brake mount type and rotor size before ordering.
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Frequently Asked Questions
Q: What brake mount type is this disc brake caliper adapter compatible with?
A: This adapter is designed for IS (International Standard) mount brake systems. It is not compatible with Post Mount (PM) frames. Always check your bike's brake mount type before purchasing.
Q: Which rotor sizes does this IS mount brake adapter support?
A: The IS F203/R180 variant supports front 203 mm rotors or rear 180 mm rotors. The IS R203 variant supports rear 203 mm rotors. Select the option that matches your specific rotor size and wheel position.
Q: Does this adapter come with all the hardware needed for installation?
A: Yes. Each package includes 1 disc brake caliper mount adapter, 2 mounting screws, and 4 washers, providing the essential hardware for a straightforward installation on compatible IS mount bicycle brake systems.
Q: Is this brake adapter suitable for both mountain bikes and road bikes?
A: Yes. This CNC machined aluminum alloy adapter is suitable for mountain bikes (MTB), road bikes, and other bicycles that use compatible IS mount brake systems with the supported rotor sizes.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.