Shimano Ultegra BR-R8170 is a front flat-mount hydraulic disc brake caliper for 12-speed road and all-road bikes, offering powerful, controlled stopping. Powerful Ultegra flat-mount stopping — genuine Shimano, brand new. Will it fit? This is the front flat-mount caliper (caliper only, not pre-bled). For Shimano road hydraulic disc systems with flat-mount frames/forks. Pair with a compatible lever and Center Lock rotor (sold separately). Key Specifications Brand Shimano Series Shimano Ultegra Model BR-R8170 MPN IBRR8170F6RF UPC 192790889511 Type Disc Brake Caliper Position Front Mount Flat Mount Material Aluminum Weight 139 g (4.9 oz) Color Black Country of Origin Japan Condition Brand new — original Shimano retail packaging Technology Highlights ✓ Flat-mount design — clean integration with modern road frames and forks. ✓ Wide pad clearance — easier setup and quieter running. ✓ ICE TECHNOLOGIES compatible — strong, fade-resistant braking with Shimano rotors and pads. ✓ Genuine Ultegra-grade — consistent power and reliability. What's in the Box 1 × Shimano Ultegra BR-R8170 front flat-mount caliper Mounting hardware & Shimano documentation Original Shimano retail packaging Brand new in retail packaging. Ships from Ontario, California (US domestic) · Estimated delivery 3–5 business days · Free 30-day returns.