Hope RX4+ Disc Brake Caliper

Yes, the RX4+ is specifically engineered to integrate with SRAM hydraulic road systems, making it a direct swap for your stock calipers.

The four-piston design provides significantly more surface area contact with the brake pads, which translates to better stopping power and, more importantly, improved modulation. This gives you finer control over your braking force, especially during technical descents or when carrying a loaded bike.

This specific model is designed for use with DOT fluid, consistent with the requirements of SRAM hydraulic systems.

The '+20mm' flat mount designation means the caliper is designed to be used with a 160mm rotor as the minimum size. If you are currently using a 140mm rotor, you will need to upgrade to a 160mm rotor to use this caliper.

Yes, you should notice a stiffer, more solid feel at the lever. Because the caliper is precision-machined from a single piece of aluminum, it resists flexing under heavy braking loads, which creates a more direct and consistent connection between your hand and the wheel.