Shimano BR-R451 Road Bike Rear Brake Caliper Mid-Reach Black New

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. Designed to pair seamlessly with high-performance groupsets like Dura-Ace Di2 7970, Ultegra 6700, and 105 5700, these rear-mounted calipers ensure crisp, reliable stopping power even during fast descents or tight cornering.

Key Features & Benefits

✔ Super SLR Optimization – Works exclusively with Super SLR-enabled levers (avoiding the “mushy” feel of standard SLR systems) for sharp, immediate response.
✔ Mid-Reach Design (47-57mm) – Ideal for modern road frames with slightly wider clearance, offering versatile fitment without compromising braking efficiency.
✔ Adjustable Toe-In Pads – Reduces brake squeal and improves pad wear for smoother, quieter performance over long rides.
✔ Cartridge-Style Brake Pads – Easy to replace and compatible with aftermarket pads for customization based on riding conditions.

Why Choose the BR-R451?

Unlike generic calipers, Shimano’s precision engineering ensures consistent modulation—whether you’re sprinting, climbing, or navigating wet roads. The black anodized finish adds durability while maintaining a sleek, race-ready aesthetic.

Perfect For: Road racers, endurance cyclists, and commuters upgrading to pro-level braking performance.

Note: Not compatible with non-Super SLR levers (e.g., older Shimano models).