Shimano Ultegra BR-R8170 Disc Brake Caliper
Best high performance upgrade for dedicated road cyclists seeking quiet reliability.
This hydraulic disc brake caliper delivers superior modulation and a more responsive feel for road cyclists. With increased pad clearance to minimize noise and a simplified maintenance process, it offers a refined, reliable upgrade for consistent stopping power.
$87.99
at
Contender Bicycles
More Ultegra options
Who it's for
- Performance cyclists seeking a quiet and friction-free ride
- Technical descenders who prioritize precise speed management
- Home mechanics looking for a cleaner and faster bleed process
Who should skip it
- Weight-obsessed hill climbers seeking the absolute lightest build
- Riders wanting to mix and match components from different brands
- Budget-conscious enthusiasts looking for the best value-to-performance ratio
Performance breakdown
Braking Modulation
Offers precise, nuanced control that inspires confidence on technical descents.
Maintenance Ease
Streamlined bleeding process makes routine upkeep significantly less frustrating.
Noise Reduction
Wider pad clearance effectively eliminates annoying rotor rub and squeal.
Weight Efficiency
Lightweight construction keeps rotational mass low without sacrificing structural integrity.
Stopping Power
Delivers immediate, reliable bite across a wide range of road conditions.
System Compatibility
Seamless integration with Shimano's ecosystem ensures consistent, high-performance operation.
Key Specs
Weight
123 grams
Brake type
Hydraulic disc brake
Mount type
Flat mount
Number of pistons
2
Hydraulic fluid type
Mineral oil
Pad type compatibility
K05S-RX, L05A-RF, L04C-MF
Rotor mount type
Center Lock
Compatible brake lever
ST-R8170
Compatible rotor
RT-MT800, RT-CL800
Know before you buy
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