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Non-toxic Rx4+ Disc Brake Caliper - Rear Flat Mount Direct +20mm Mineral Oil Orange Cyber Monday Only [zp68iPd3]

$30.99 $99.99 -69%

Non-toxic Rx4+ Disc Brake Caliper - Rear Flat Mount Direct +20mm Mineral Oil Orange Cyber Monday Only [zp68iPd3]Introducing the Hope RX4+ Disc Brake Caliper, a masterpiece of engineering and innovation designed for road and cyclocross drop bar brakes. With 25 years of experience in hydrau

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Non-toxic Rx4+ Disc Brake Caliper - Rear Flat Mount Direct +20mm Mineral Oil Orange Cyber Monday Only [zp68iPd3]

Non-toxic Rx4+ Disc Brake Caliper - Rear Flat Mount Direct +20mm Mineral Oil Orange Cyber Monday Only [zp68iPd3]

Introducing the Hope RX4+ Disc Brake Caliper, a masterpiece of engineering and innovation designed for road and cyclocross drop bar brakes. With 25 years of experience in hydraulic disc brakes, Hope has crafted a caliper that promises unrivaled feel and modulation. The RX4+ is not just a caliper; it's a testament to Hope's commitment to excellence in cycling performance.
  • Monobloc Design: The RX4+ features a precision CNC machined monobloc design, creating a stiffer caliper that reduces fuzzy lever feel and brake pad rub, ensuring a smooth and responsive braking experience.
  • Lightweight and Powerful: The slimline 4 piston lightweight design provides reliable and powerful braking, making it an ideal choice for riders seeking both performance and efficiency.

High-Quality Construction and Versatility

Crafted from high-quality 2014-T6 aluminum, the RX4+ offers high strength while saving weight, making it a perfect fit for any cyclist looking to enhance their ride. Its fully servicable design ensures an extended life, while the top entry pad fitting simplifies removal or installation for your convenience.
  • High Strength and Weight Savings: CNC machined from 2014-T6 aluminum, the RX4+ combines high strength with the benefit of weight savings, providing a robust yet agile braking solution.
  • Extended Life and Ease of Use: The fully servicable design and top entry pad fitting make the RX4+ a durable and user-friendly choice, fitting 140, 160, and 180mm rotors for maximum versatility.

Technical Specifications and Unique Features

The Hope RX4+ Disc Brake Caliper is designed with the highest standards in mind. It comes with a Bore Cap marked with an "M" for easy identification, and it utilizes mineral oil for its hydraulic system, ensuring optimal performance and durability. The caliper is available in an eye-catching orange color, making it a standout choice for any cyclist.
  • Hydraulic System and Color: The RX4+ features a hydraulic system with mineral oil, ensuring smooth and consistent braking performance, and comes in a vibrant orange color to make your bike stand out.
  • Technical Specifications: The caliper is actuated by a hydraulic lever, designed for rear brake position, and includes all necessary components for a complete braking system.

What Our Customers Say

January 17, 2026

Absolutely no complaints!

Very good quality. I'm pleased.

- Crystal K..

January 17, 2026

Absolutely no complaints!

Shipped fast and works great.

- Aubrey M..

January 17, 2026

Absolutely no complaints!

I'm happy with this. So good.

- Tiera T..

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