React-4: Redefining Braking for the MTB Rider. At the heart of this innovative 4 piston brake system lies a formidable 4-piston hydraulic calliper, 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.

• 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

• Complete brake set

• Stainless steel rotors

• Spare olives to allow for hose reduction

• Weight - 315g

• Complies with and exceeds EN15194 and ISO4210 regulations