Shimano BR-R451 Road Bike Brake Calipers – Precision Stopping Power for Performance Riders

Engineered for road cyclists who demand responsive braking, the Shimano BR-R451 calipers deliver exceptional control with their Super SLR compatibility. Perfectly matched with Shimano’s high-performance groupsets including Dura-Ace Di2 7970, Ultegra 6700, and 105 5700, these brakes ensure seamless integration for a smooth ride.

Key Features:
– Super SLR Optimization: Designed exclusively for Super SLR-enabled levers (avoid pairing with standard SLR systems to prevent reduced responsiveness).
– Adjustable Toe-In: Fine-tune brake pad alignment to eliminate squealing and improve pad longevity.
– Mid-Reach Design (47–57mm): Ideal for modern road bikes with clearance for wider tires or fenders.
– Cartridge Pads: Swappable pads for easy maintenance and compatibility with different riding conditions.

Why Choose BR-R451?
Unlike generic calipers, these silver-finish brakes offer a featherlight lever feel with unwavering stopping power—critical for descents or sprint finishes. Their precision engineering minimizes hand fatigue during long rides, making them a favorite among endurance racers and commuters alike.

Note: For optimal performance, pair with Shimano’s Super SLR levers only.