Description

SHIMANO BR-R451 Front Rim Brake Caliper
Upgrade your stopping power and unlock greater versatility with the SHIMANO BR-R451 Front Rim Brake Caliper, a premium choice for modern road cycling and performance-oriented builds. Designed for riders who demand reliability, precise control, and the flexibility to use wider tires, this brake caliper sets a new standard for performance in its class. It is the perfect solution for everything from high-mileage training and spirited club rides to dependable all-weather commuting and light touring adventures.
The core of the BR-R451´s superior performance lies in its combination of SHIMANO´s proven technologies. The NEW SUPER SLR (SHIMANO Linear Response) system dramatically reduces friction within the caliper, lever, and cable, resulting in a light, responsive feel at the lever and a smooth, predictable application of braking force. This enhanced modulation allows you to finely control your speed with confidence, whether you´re navigating technical descents or busy city streets.
Exceptional Versatility for Modern Bicycles
One of the standout benefits of the BR-R451 is its long-reach design. With a 57mm reach, this caliper provides exceptional clearance, officially accommodating tires up to 32mm wide. This feature transforms your bike´s capability, allowing you to run higher-volume tires for increased comfort, better traction on imperfect roads, and reduced rolling resistance. The generous clearance also makes it an ideal Rim Brake choice for bikes fitted with full-length mudguards, making it a favorite for winter training, audax, and all-season commuting bikes. The Dual-Pivot construction ensures that the brake arms move symmetrically, providing consistent and powerful braking from both sides of the rim for improved efficiency and pad longevity.
Engineered for Performance and Ease of Use
Every detail of the SHIMANO BR-R451 is engineered for the discerning cyclist. The brake shoes feature an adjustable toe-in, allowing for precise setup to eliminate brake squeal and optimize pad contact with the rim for maximum effectiveness and even wear. For practical, real-world use, a wider-opening quick-release lever makes wheel changes fast and effortless, a welcome feature when fixing a flat or swapping wheelsets. This combination of powerful performance, wide tire compatibility, and user-friendly adjustments makes the BR-R451 a smart and reliable upgrade for any road cycling enthusiast.
Key Features:
* Delivers light lever action and highly accurate braking power
* Utilizes the advanced SHIMANO SUPER SLR system for reduced friction and improved response
* Features adjustable toe-in brake shoes for quiet, optimized performance
* Equipped with a wider-opening quick-release lever for easy wheel removal
Technical Specifications:
* Type: SUPER SLR Dual Pivot
* Reach (mm): 57
* Brake Shoe Standard: R50T2
* Compatibility: SUPER SLR
* Maximum Tire Size: 32C
* Rim Width Compatibility (mm): 19-26
* Assembly Pivot Nut | Front (mm): 10.5, 12.5, 18.0, 27.0
* Remarks: Quick release lever opens wider for easy tire removal