Dia-Compe 505Q Rear Road Brake Caliper 45–57mm Silver or Black Dual Pivot 146g

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BCDC505RK-combo
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As low as £19.99

505Q Road, Rear - Side pull Cold forged, Twist QR

The Dia-Compe 505Q Rear Road Brake Caliper is a high-quality, lightweight brake designed for classic and modern road builds. With a reach range of 45–57mm, this caliper is perfect for bikes requiring longer reach than standard short-reach brakes.

Crafted from cold-forged aluminium, the 505Q 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 anodised black to match your bike’s style.

Weighing in at just 146g, this brake combines performance, classic aesthetics, and compatibility with a wide range of frames. Ideal for retro builds, custom road bikes, and general upgrades.

More Information
Name Dia-Compe 505Q Rear Road Brake Caliper 45–57mm Silver or Black Dual Pivot 146g
Specification
  • Brand: Dia-Compe
  • Model: 505Q
  • Type: Rear Road Brake Caliper
  • Material: Cold-forged aluminium arms
  • Reach: 45–57mm
  • Quick Release: Twist-style
  • Finish Options: Polished Silver or Anodised Black
  • Weight: 146g (per wheel)
  • Use-case: Classic road bikes, custom builds, retro restorations
  • Design: Lightweight, dual-pivot style with smooth performance

 

Manufacturer Dia-Compe
Manufacturer ID BCDC505RK
Brand Product Dia-Compe
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Dia-Compe 505Q Rear Road Brake – 45–57mm Reach, Silver or Black, 146g

As low as £19.99