Wilwood 120-13383-RD Narrow Brake Caliper Red - SL6 6-Piston

The Wilwood 120-13383-RD is a high-performance 6-piston disc brake caliper from the 2nd generation Narrow SL6 series, featuring a lightweight billet aluminum body with a durable red powder coat finish. Designed with internal crossover passages, this caliper offers versatile mounting options for both front and rear spindle applications using the same part number.

Advanced Engineering and Construction:

• Lightweight billet aluminum body weighing just 5.2 pounds, optimized through computer-generated solid modeling and FEA stress analysis
• Full-length stiffening ribs and reinforced radial transitions from piston bore housings to closed end bridges
• Closed end bridge design provides superior strength and reduced deflection compared to open bridge calipers
• Four high-strength steel end bridge bolts plus a center bridge bolt for maximum rigidity and easy pad access without caliper removal
• Internal crossover passages eliminate external brake lines and allow reversible mounting configuration

Performance Features:

• Differential bore six-piston configuration ensures balanced pad loading and even wear in high-heat conditions
• One-piece stainless steel pistons provide excellent heat resistance and corrosion protection
• High-temperature square-faced bore seals maximize sealing area and control piston retraction
• SRS (Slide Retention System) bridge plates eliminate bridge wear from pad gouging and prevent pad rattle
• Recessed two-piece bleed screws protected from track debris and damage

This caliper is engineered for competition and high-performance street applications where maximum stopping power, durability, and weight savings are critical. Compatible with the full range of Wilwood brake pad compounds to match specific heat range and response requirements.