Wilwood 120-14437-BK FNSL6R Forged Narrow Superlite 6R Caliper with Dust Seal - Left Hand - Black

The Wilwood Forged Narrow Superlite 6R Dust Seal (FNSL6R-DS) caliper represents the latest evolution in high-performance disc brake technology, combining race-proven stopping power with environmental sealing capability. This left-hand caliper features Wilwood's exclusive wiper dust seal design, making it ideal for applications requiring protection against environmental contaminants while maintaining extreme braking performance.

Forged Aluminum Construction:

Each caliper body is stress-flow forged from premium grade aluminum alloy billets, a process that re-aligns the metal's internal grain structure to flow within the contour of the caliper body. This manufacturing technique eliminates internal stresses and grain interruptions that occur in traditional billet machining, resulting in superior strength at just 4.9 pounds. The design is optimized through computer-generated solid modeling and FEA stress analysis for maximum durability and efficiency.

Six-Piston Differential Bore Design:

• Unique differential bore configuration provides balanced pad loading for even wear
• One-piece stainless steel pistons offer slow heat transfer and high corrosion resistance
• Optional Thermlock piston upgrade available for enhanced thermal barrier protection
• Reduced heat transfer extends seal life and minimizes heat-induced pedal fade

Advanced Features:

• SRS (Stainless Rotor Saver) bridge plates eliminate bridge wear from pad gouging
• Spring-loaded SRS plates prevent pad rattle and dampen vibrations that cause squeal
• Two-piece bleed screws on each end with internal fluid crossovers
• High-temperature square-faced bore seals maximize sealing area and control piston retraction
• Compatible with full range of Wilwood pad compounds for custom brake response tuning

Designed for competition and high-performance street applications, this caliper delivers big brake performance with the environmental protection required for demanding conditions. The black anodized finish provides corrosion resistance and a professional appearance.