Alcon CRB343 "Motorsports" 4-Piston Front Calipers – Pair

The Alcon CRB343 is a lightweight, high-performance front brake caliper engineered for motorsport applications where precision, consistency, and thermal stability are essential. Featuring a radial mount design, it delivers maximum rigidity and a firm, predictable pedal feel — ideal for competitive racing environments.

Equipped with differential aluminium pistons (38.1mm / 41.3mm), the CRB343 minimizes pad taper and promotes even pressure distribution. Stainless steel pistons are also available as an option to further reduce heat transfer to the brake fluid under sustained load.

The caliper includes 2kg anti-knock back springs to maintain pad contact and reduce knock-off during aggressive cornering. Hard stainless steel wear plates enhance durability and protect the caliper body during heavy use. This caliper is designed for fast, effective pad changes and does not use fixed pad retainers, making servicing simpler in a motorsport setting.

Key Features:

• Radial mount – ensures maximum caliper stiffness and pedal consistency

• Differential piston sizes: 38.1mm / 41.3mm – reduce pad taper wear

• Aluminium pistons standard – stainless steel optional for enhanced thermal resistance

• 2kg anti-knock back springs – reduce pad knock-off

• Hard stainless steel wear plates – protect caliper from pad drag

• No fixed pad retainers – allows for quicker pad service

• Dry weight: 2.40kg (excluding pads)

• Fluid inlet: 3/8-24 UNF (-3) female

Specifications:

• Disc diameter compatibility: Ø280 – 343mm

• Disc thickness compatibility: 28 – 32mm

• Pad reference: Alcon 4441 or 4423

  • 16mm thick

  • 132mm long x 50mm deep

  • Pad area: 133cm² per caliper