Hope RX4+ Disc Brake Caliper

The RX4+ is designed specifically for flat-mount road and cyclocross frames. You will need to ensure your bike uses a flat-mount interface, as it is not compatible with post-mount systems.

This caliper is engineered to run on DOT fluid. Be sure to check your existing brake levers to ensure they are also compatible with DOT fluid, as mixing mineral oil and DOT systems can damage the seals.

Yes, the four-piston configuration provides more consistent power and better heat management, especially on long descents. You will likely notice a more progressive lever feel and increased stopping confidence compared to a standard two-piston setup.

It is straightforward. The RX4+ features top-entry pad access, meaning you can swap out your pads without removing the caliper from the frame or needing to re-bleed the system.

This caliper is compatible with rotors ranging from 140mm to 180mm. Always verify that your frame and fork are rated for the specific rotor size you intend to install.

At approximately 272 grams, it is built for durability and rigidity rather than being the lightest option on the market. While it may add a few grams compared to some ultra-lightweight racing calipers, the trade-off is superior braking performance and stiffness.