Developed for downhill and enduro riding, the Hayes Dominion A4 disc brake and lever set features a specific lever pull curve to balance on-demand pressure modulation and provide firm engagement.
- Low-effort lever input and high-fidelity power output provide optimum braking feel and control
- Master cylinder is factory-tuned for the shortest dead stroke possible and a crisp bite point
- Lever has a flip-flop design and features tool-free reach adjustment for a customized fit and feel
- Cold-forged 4-piston caliper is structurally rigid; KingPin pad retention bolt increases stiffness
- With a 2-stroke dual port bleed system, 5.1 fluid and Kevlar® hose, the hydraulic system is engineered for easy maintenance and ultimate performance across all temperatures
- Crosshair Alignment technology allows mechanics and riders to quickly and accurately set brake calipers
- D-Series rotors, caliper adapters and bleed kit not included
Imported.
View all Hayes Disc Brake Calipers| Best Use | Mountain Biking |
|---|---|
| Brake Mount | Post Mount |
| Number of Pistons | 4 Pistons |
| Brake Position | Rear: Rear |
| Brake Lever Position | Right or Left |
| Adjustable Contact Point | Yes |
| Adjustable Reach | Yes |
| Hydraulic Fluid Type | DOT Brake Fluid |
| Hydraulic Hose Length | Rear: 1800 millimeters |
| Pad Compound | Semi-Metallic |
| Material(s) | Aluminum |
| Weight | Rear: 325 grams |