Shimano XTR RT-MT905 Disc Brake Rotor

The RT-MT905 is designed specifically for 6-bolt disc hubs. If your wheels use a Center Lock interface, this rotor will not fit without an adapter, though we generally recommend sticking to the mounting standard your hub was built for.

This technology uses a multi-layer construction with an aluminum core to dissipate heat much faster than a standard steel rotor. This keeps your braking system cooler on long, steep descents, which prevents brake fade and helps your pads last longer.

While 203mm is a standard size for aggressive trail and enduro riding, you must ensure your frame and fork are rated to handle a rotor of this diameter. Check your manufacturer's specifications to confirm the maximum rotor size supported by your bike.

Yes, by effectively managing heat, this rotor helps maintain a more consistent operating temperature, which is a common factor in reducing brake system noise. However, keep in mind that squeal can also be caused by contaminated pads or improper alignment.

At 187g, it is built for durability and heat management rather than weight savings. While it will certainly perform well, it is likely overkill for cross-country riding; it is best suited for enduro, downhill, or aggressive trail riding where heat buildup is a genuine concern.