Shimano BR-R9270 Dura-Ace Flat Mount Caliper - Rear

Shimano BR-R9270 Dura-Ace Flat Mount Caliper delivers pro-level braking performance with lightweight design, precise modulation, and superior heat control. Built for efficiency and control, it combines advanced ceramic piston technology with Shimano s proven hydraulic system to ensure consistent stopping power in every condition.Key Features and Benefits:Oversized 22mm ceramic pistons: Deliver exceptional heat insulation and stiffness. This reduces temperature build-up, ensuring consistent braking power on long descents.Opposed 2-piston design: Provides balanced pressure on both sides of the rotor. This reduces pad taper wear and delivers smooth, predictable braking performance.10% increased pad-to-rotor clearance: Minimises the risk of rotor drag and noise. The caliper runs cleaner and quieter, even in tight tolerances or under heat expansion.Forged lightweight body: Enhances rigidity while keeping weight to a minimum. This improves lever feel and responsiveness, giving the rider precise braking feedback.One-way bleeding system: Simplifies maintenance and prevents air from being trapped. This results in faster, cleaner servicing and long-term reliability.Resin pads with aluminium cooling fins: Improve heat dissipation by up to 50°C. This extends pad life and keeps performance consistent on sustained braking efforts.The Shimano BR-R9270 caliper is built for riders who demand absolute control and reliability in high-speed, high-load conditions. Its low-profile flat mount design improves aerodynamics and wheel clearance, while the internal fluid routing and separate bleed port enhance maintenance access. When paired with Ice Tech FREEZA rotors (not included), it delivers the smooth, fade-free braking expected from Dura-Ace s flagship performance level.Engineered for precise modulation, heat management, and lightweight efficiency, this caliper sets the standard for high-performance road braking. Experience the consistency and control that define Shimano s Dura-Ace heritage with every pull of the lever.Specification:Front wheel use for flat mount forks with adapter to flip between 140 and 160 mmOversized 22mm ceramic pistons optimized for heat insulation, lightweight and stiffnessOpposed 2-piston design reduces leading effect and optimal pad wearImproved pad to rotor clearance with 10% increase pad clearance over BR-B9170 reduces the chance of rotor dragDirect flat mount and open design allows easy and quick wheel replacementForged calliper design is lightweight and rigidOne way internal fluid circuit makes bleeding easyMineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluidShim-less mounting bracket allows for quick installation and setting upRecommended for use with Ice Tech FREEZA Centre Lock RT-MT900 rotors for optimum braking performanceComes complete with resin compound aluminium radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 deg CInline hose routing for low profile designSeparate bleed port and valve screw for improved bleeding process