BR-RS811 Caliper Brake

Product Information

The Shimano BR-RS811-R is a rear direct mount rim brake specifically engineered for optimal aerodynamics and a sleek profile on performance road, time trial, and triathlon framesets. Its unique under-bottom-bracket mounting position not only looks clean but also contributes to an aerodynamic advantage, making it a solid choice for riders focused on speed and efficiency. This brake delivers a balanced blend of stiffness, low weight, and strong, predictable stopping power.

Features

• Direct mount design, ideal for under bottom bracket mounting
• Enhanced aerodynamics and a slim, flat caliper profile
• Integrates SLR-EV technology for superior braking response and modulation
• Provides generous clearance for tires up to 28mm (28C)
• Compatible with rim widths ranging from 20.8mm to 28mm
• Equipped with angle-adjustable cartridge brake shoe mounts
• Includes R55C4 brake pads, suitable for aluminum rims

Specs

• Model Number: BR-RS811-R
• Series: Shimano (compatible with Ultegra R8100 series)
• Type: Dual pivot side-pull, Direct Mount
• Mounting Position: Rear, under bottom bracket (chainstays)
• Material: Aluminum (caliper, brake shoe holder)
• Reach: 51mm
• Max Tire Size: 28mm (28C)
• Rim Width Compatibility: 20.8mm - 28mm
• Included Pads: R55C4
• Weight: 170g (BR-RS811-R)