Wilwood 120-14490-BK FNSL6R Forged Narrow Superlite 6R Left Hand Brake Caliper with Dust Seal - Black

The Wilwood Forged Narrow Superlite 6R Dust Seal (FNSL6R-DS) brake caliper combines lightweight forged construction with environmental sealing for demanding racing and high-performance street applications. This left-hand caliper features exclusive wiper dust seals that protect internal components in harsh conditions while delivering exceptional stopping power.

Advanced Forged Construction:

Each caliper body is stress-flow forged from premium-grade aluminum alloy billets, creating superior strength at just 4.9 pounds. The stress-flow forging process realigns the metal's internal grain structure to follow the contour of the caliper body, eliminating internal stresses and grain interruptions that occur in traditional machined billet calipers. This represents the strongest possible aluminum caliper construction method.

Six-Piston Differential Bore Design:

The unique differential bore configuration with six pistons provides balanced pad loading for even wear characteristics in sustained high-heat environments. Standard calipers feature one-piece stainless steel pistons chosen for their slow heat transfer properties and exceptional corrosion resistance. Optional Thermlock piston upgrades are available, which create an efficient thermal barrier to further reduce heat transfer from pads to the caliper body, seals, and brake fluid.

Key Features:

• Stress-flow forged aluminum body weighs only 4.9 pounds
• Exclusive wiper dust seals for environmental protection
• Six-piston differential bore configuration for balanced pad wear
• One-piece stainless steel pistons with excellent heat resistance
• SRS bridge plates eliminate pad gouging and prevent pad rattle
• Two-piece bleed screws on each end with internal fluid crossovers
• High-temperature square-faced bore seals for controlled piston retraction
• Compatible with full range of Wilwood pad compounds
• Black anodized finish
• Left-hand mounting configuration

The integrated SRS (Self-Retaining Spring) bridge plates extend caliper service life by eliminating bridge wear from pad contact while dampening harmonic vibrations that contribute to brake squeal. Internal fluid crossovers and protected bleed screws prevent damage from track debris. This caliper is ideal for competition, road racing, and aggressive street driving where environmental sealing and maximum performance are required.