Redefining Braking for the MTB Rider. At the heart of this innovative 4-piston brake system lies a formidable 4-piston hydraulic caliper, meticulously engineered to provide unmatched stopping power and precision control.

Whether navigating steep descents or tackling challenging trails, React 4 ensures powerful, reliable performance in even the most demanding conditions.

Technical specifications

• Powerful 4 Piston hydraulic brake system
• Smooth, powerful modulated braking
• Self adjusting 16mm calliper pistons
• Split-C lever bracket design
• Lever reach adjustment to suit all hand sizes
• Suitable for MTB and Hybrid bikes
• Uses environmentally friendly mineral oil
• International standard and post mount compatible
• Stainless steel rotors
• Spare olives to allow for hose reduction
• Mineral oil fluid to protect the environment
• Weight - 315g
• Complies with and exceeds EN15194 and ISO4210 regulations

Box Contents

• X2 Calipers
• X2 Levers
• X2 Rotors and bolts
• X2 Hoses and all fittings