The R539 is a dual pivot caliper brake with a 47-57mm reach, featuring forged aluminum arms for strength and durability. It provides smooth and responsive braking performance, ideal for road bikes.

– Brake Type: Dual Pivot Rim
– Pull Ratio: Short
– Reach: Mid 47-57mm
– Pads: P422 adjustable angle cartridge
– Weight: 160 grams per caliper