Dominate the steepest, wildest descents with the Hope Tech Evo GR4 Brake. Delivering uncompromising 4-piston stopping power and refined lever feel, it is the ultimate braking benchmark for gravity and e-bike riders.
Built for the most demanding downhill, enduro, and e-bike applications, the Hope Tech Evo GR4 sets a new standard in maximum stopping performance. Crafted in the UK with precision machining, its stiff, one-piece 4-piston caliper houses the largest pistons in Hope's range—generating roughly 6% more power than the Tech 4 V4. The redesigned caliper profile also delivers improved frame clearance while ensuring consistent power as pads wear.
Up front, the Evo master cylinder incorporates an updated cam mechanism that decreases free lever stroke while retaining signature Hope modulation. Dual guide bushes and a roller bearing main pivot deliver buttery-smooth lever travel. Combined with an integrated top bleed port for simpler maintenance and three optional lever blade profiles (Standard, Power, and Control), you get total tailored control over your braking performance.
Maximum Gravity Power: One-piece 4-piston caliper equipped with Hope's largest pistons to deliver unmatched stopping force for steep descents and heavy e-bikes.
Refined Evo Cam Action: Advanced cam design reduces free lever pull for a firmer bite point without losing fine-tuned modulation.
Simplified Master Cylinder Bleeding: Built-in bleed port allows quick, mess-free maintenance without having to remove the top reservoir lid.
Caliper Type: 4-Piston One-Piece Hydraulic Disc
Brake Fluid: DOT 5.1
Adjustability: Independent Tool-Free Reach and Bite Point Adjustment
✅ Extreme Stopping Force: Perfect for aggressive gravity, downhill, and high-speed e-bike riding where maximum braking power is required.
✅ Customisable Ergonomics: Offers interchangeable lever blade profiles (Standard, Power, Control) and independent reach/bite adjustments to suit any hand size.
✅ Easy Servicing: Designed with an integrated top bleed port and fully rebuildable British-made components for long-term durability.
❌ Overkill for Light Riding: Offers far too much power and weight for cross-country, light trail, or casual commuting setups.
❌ No Vented Rotor Support: The GR4 caliper is deliberately engineered without support for vented rotors to maximise structural stiffness.
❌ DOT Fluid Maintenance: Uses DOT 5.1 fluid, which requires careful handling during bleeding compared to mineral oil systems.
Take advantage of Hope's updated Evo lever blade offerings if you run extreme cockpit positions. If you like your levers set ultra-close to the grips, swap to the 'Control' blade to keep your fingers in a natural biomechanical sweet spot; if you prefer a wide reach, the 'Power' blade gives you an extra 5mm of outward range and mechanical leverage!
