Wilwood 120-11781 Forged Narrow Superlite 6R Left Hand Brake Caliper

The Wilwood Forged Narrow Superlite 6R (FNSL6R) caliper represents the pinnacle of high-performance brake technology for demanding racing and sports driving applications. This left-hand configuration caliper combines big brake stopping power with a lightweight, ultra-durable forged aluminum body weighing just 4.9 pounds.

Advanced Forged Construction:

Each FNSL6R caliper body is stress-flow forged from premium grade aluminum alloy billets. This specialized forging process realigns the metal's internal grain structure to flow within the contour of the caliper body, eliminating the stress points and grain interruptions that occur with traditional billet machining. The result is an exceptionally strong, rigid caliper body that maintains dimensional stability under extreme braking loads and temperatures.

Key Features:

• Six-piston differential bore configuration for balanced pad loading and even wear
• One-piece stainless steel pistons with slow heat transfer properties and superior corrosion resistance
• SRS (Stainless Rotor Steel) bridge plates eliminate bridge wear from pad gouging and prevent pad rattle
• Two-piece bleed screws on each caliper end with internal fluid crossovers for protection against debris damage
• High-temperature square-faced bore seals provide maximum sealing area and controlled piston retraction
• Compatible with Wilwood's Thermlock multi-part pistons for enhanced thermal barrier protection
• Anodized finish for corrosion protection and professional appearance

Performance Benefits:

The differential bore piston arrangement ensures optimal pad pressure distribution during sustained high-heat braking, while the advanced seal design and optional Thermlock pistons minimize heat transfer to the brake fluid. This thermal management reduces the risk of heat-induced brake fade and extends component service life. The spring-loaded SRS bridge plates dampen harmonic vibrations that contribute to brake squeal, ensuring quiet operation alongside exceptional stopping power.

Compatible with the full range of Wilwood performance brake pad compounds to match specific brake response characteristics and operating temperature requirements for any competition or high-performance street application.