Alcon ALACIR1559AX17HZLT-RL 2018+ Ford F-450/F-550 Rear Left Brake Caliper

The Alcon CIR1559AX17HZLT-RL is a high-performance rear left (driver side) replacement brake caliper engineered for 2018+ Ford F-450 and F-550 heavy-duty trucks. Designed as part of Alcon's purpose-built big brake upgrade system for the F-450/F-550 platform, this caliper delivers motorsport and defense-grade braking performance suited for demanding street, towing, off-road, and armored vehicle applications.

Alcon's F-450/F-550 brake system features a 6-piston, 47.6mm piston configuration housed in a zinc-finished cast iron body. The iron construction allows fitment inside many standard wheels where aluminum calipers will not fit—an important advantage for trucks running large specialty off-road tires with extended rolling radii.

Key Features:

• 6-piston cast iron caliper body with acid zinc finish for maximum corrosion resistance
• High-temperature seal material rated for extreme thermal environments
• Wiper seals on every piston for superior dirt and debris exclusion in off-road conditions
• Pad push-back springs for optimum off-road wear resistance and consistent pedal feel
• Inboard bleed screws for added tamper resistance and protection
• Compatible with stock OEM ABS, traction control, and master cylinder—no additional modifications required
• Engineered to support GVW operation up to approximately 11,000 kg (24,250 lbs)
• Designed to pair with Alcon's 400mm x 36mm rear rotors (sold separately)

Compared to the factory braking system, Alcon's platform is documented to deliver up to a 10% reduction in disc temperature rise, up to 20% reduction in brake pad wear rates, up to 4% increase in available brake torque, and up to 4% reduction in required pedal effort. This is a direct replacement caliper for the rear left position in an existing Alcon F-450/F-550 big brake kit. Brake pads are not included.