Shimano BR-R451 Road Brake Calipers: Precision Control for Demanding Riders

Experience race-inspired braking performance with Shimano’s BR-R451 calipers—engineered for road cyclists prioritizing safety and responsiveness. Designed exclusively for rear-wheel installation on mid-reach frames (47-57mm clearance), these silver calipers deliver feather-light lever action and surgical stopping accuracy. Perfect for fast-paced group rides, alpine descents, or competitive criteriums where split-second modulation matters.

Why Riders Choose BR-R451:
– Super SLR Synergy: Optimized exclusively for Super SLR-enabled levers like Dura Ace Di2 7970/7900 or Ultegra 6700 series—delivering crisp engagement without “mushy” feedback common with standard SLR systems.
– Adjustable Toe-In Technology: Fine-tune brake shoe angles to eliminate squeal, reduce uneven pad wear, and enhance wet-weather grip—ideal for all-season training.
– Effortless Power: Cartridge-style pads offer tool-free swaps during mid-ride maintenance, while the short-pull design reduces hand fatigue during long climbs.

Ideal For:
– Performance-focused road bikes requiring mid-reach calipers
– Cyclists upgrading from entry-level brakes to competition-grade components
– Wet/dry riding conditions demanding consistent modulation

⚠️ Critical Compatibility Note: Pair only with Super SLR levers—using standard SLR systems compromises responsiveness.

Upgrade your braking confidence—engineered for riders who refuse to compromise between control and speed.