Shimano 600 Ultegra BR-6403 Brakeset | Side Pull Calipers | Road Bike

Description

Will this work?

• Dual pivot side pull caliper — standard road rim brake, not cantilever or direct mount
• Standard reach — fits rims with 39–49mm brake reach
• Compatible with standard road brake cable pull — Shimano, Campagnolo, or any standard brake lever
• Front and rear calipers included
• Includes fixing nuts, washers, cable barrels, and cable locks

Condition: Excellent. Light signs of use only. Brake pads in excellent condition with low wear. All hardware present and complete as pictured.

Notes from MyBikeThing — The BR-6403 is the tricolor generation of Shimano 600 Ultegra — the era when Shimano repositioned its mid-range as a genuine racing component alongside Dura-Ace. Dual pivot side pull design, gray pewter finish with the iconic tricolor stripe, made in Japan. These are the brakes that belong on a period-correct late 80s or early 90s road build and they’re increasingly hard to find in this condition. A complete, functional set ready to install.

Workshop Wisdom — Standard road caliper installation: front bolt threads into a recessed nut behind the fork crown, rear into the brake bridge. Torque fixing bolt to 6–8Nm. Center the caliper over the rim before final tightening — use the centering adjustment screw on the caliper body to fine tune pad contact. Pad toe-in of 1–2mm at the rear improves modulation and reduces squeal.

Guarantee — You put in the miles, we put in the work. 30-day guarantee on fit, function, and condition. – Paul

Keywords — Shimano 600 Ultegra BR-6403, brakeset, dual pivot, side pull caliper, road bike brakes, tricolor, vintage Shimano, Japan, 39-49mm reach, 6400 series, retro road bike brakes, rim brakes