The Dia-Compe 505Q is a high-quality, lightweight brake designed for classic and modern bikes.

Crafted from cold-forged aluminum, the 505Q has a reach of 45-57mm and delivers reliable stopping power with minimal flex. It features a twist-style quick release for fast wheel changes, and comes in your choice of polished silver or anodized black.

Weighing in at just 146g, this brake combines performance, classic aesthetics, compatibility with a wide range of frames, and is deal for vintage-inspired builds.