Red CNC Aluminum IS Mount Disc Brake Caliper Adapter R203

$15.13 $18.15

Red CNC Machined IS Mount Disc Brake Caliper Adapter

Upgrade or replace your bicycle's brake caliper mounting hardware with this precision-engineered IS Mount Disc Brake Caliper Adapter. CNC machined from lightweight aluminum alloy and finished in a bold red anodized color, this bracket is built for reliable performance on mountain bikes, road bikes, and any bicycle using an International Standard (IS) brake mount system.

Key Features

IS Mount Compatible: Available in two configurations — IS F203/R180 (front 203 mm or rear 180 mm rotor) and IS R203 (rear 203 mm rotor). Choose the option that matches your setup before ordering.
CNC Machined Aluminum Alloy: Precision CNC machining delivers a strong, accurate frame that supports stable caliper positioning and long-term durability for everyday riding and cycling maintenance.
Accurate Dimensions:
- IS F203/R180: Approx. 86 × 30 mm | Hole spacing: approx. 51 mm & 74 mm center-to-center
- IS R203: Approx. 95 × 42 mm | Hole spacing: approx. 51 mm & 74 mm center-to-center
Proper Caliper Alignment: Designed to correctly position your brake caliper relative to the rotor, making it ideal for brake upgrades, worn-part replacement, and general brake system adjustments.
Complete Hardware Included: Each package includes 1 adapter bracket, 2 mounting screws, and 4 washers — everything you need for a straightforward installation.
Bold Red Finish: Eye-catching anodized red finish that adds a sporty accent to your MTB or road bike build.

Specifications

Item Type	Disc Brake Caliper Mount Adapter
Material	Aluminum Alloy (CNC Machined)
Color	Red (Anodized)
Mount Type	IS (International Standard)
Options	IS F203/R180 & IS R203
Country of Origin	Made in China

Package Contents

1 × Disc Brake Caliper Mount Adapter
2 × Mounting Screws
4 × Washers

Important Notes

Please verify your bike's brake mount type and rotor size before ordering to ensure compatibility.
Screen color settings may cause slight color variations from product photos.
Allow slight measurement deviation (±1–2 mm) for all listed dimensions.

Frequently Asked Questions

Q: What is the difference between the IS F203/R180 and IS R203 adapter options?

A: The IS F203/R180 adapter is designed for use with a front 203 mm rotor or a rear 180 mm rotor on IS mount brake systems. The IS R203 adapter is specifically designed for rear 203 mm rotor setups. Check your current rotor size and mounting position before selecting your option.

Q: Is this disc brake caliper adapter compatible with all bike types?

A: This adapter is compatible with mountain bikes (MTB), road bikes, and other bicycles that use an International Standard (IS) brake mount system with the specified rotor sizes. It is not suitable for post mount or flat mount brake systems.

Q: Does the package include all necessary hardware for installation?

A: Yes. Each package includes 1 disc brake caliper mount adapter, 2 mounting screws, and 4 washers, providing all the essential hardware needed for a standard installation.

Q: What material is this bike brake caliper adapter made from?

A: The adapter is CNC machined from aluminum alloy, offering a solid and lightweight structure suitable for regular cycling use. The red anodized finish adds both style and a layer of surface protection.

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.