Wilwood 140-17543-R Forged Narrow Superlite 4R Rear Brake Kit with Parking Brake 14 Inch Slotted Rotor

The Wilwood 140-17543-R Forged Narrow Superlite 4R rear disc brake kit delivers professional-grade big brake performance for muscle car rear axles requiring an integrated parking brake solution. This comprehensive kit combines lightweight forged aluminum construction with robust stopping power, making it ideal for custom builds, show vehicles, and high-performance street machines.

Advanced Caliper Technology:

The FNSL4R four-piston calipers feature radial mounting for simplified adaptation and accurate disc alignment, with each body stress-flow forged from premium grade aluminum alloy billets. This forging process re-aligns the metal's internal grain structure to flow within the caliper contour, eliminating stresses that occur in traditional machined billets. Starting at just 4.9 pounds, these calipers deliver maximum strength without excess weight.

Key Features:

• FNSL4R forged narrow four-piston radial mount calipers
• 14-inch two-piece slotted rotors for superior heat dissipation
• High-performance BP-10 compound brake pads included
• Integrated internal drum parking brake system for clean installation
• One-piece stainless steel pistons for slow heat transfer and corrosion resistance
• SRS bridge plates eliminate pad gouging and extend caliper service life
• Two-piece bleed screws and internal fluid crossovers prevent track debris damage
• Red powder-coated caliper finish

Performance Benefits:

The hidden internal shoe parking brake system provides superior static holding power while maintaining a clean, professional appearance. The spring-loaded SRS plates eliminate pad rattle and dampen harmonic vibrations that contribute to brake squeal. High-temperature square-faced bore seals provide maximum sealing area and controlled piston retraction, ensuring consistent pedal feel and long-term reliability.

This kit is engineered to complement front big brake upgrades, delivering balanced braking performance across your entire vehicle. The radial mount design simplifies installation and allows precise caliper positioning for optimal pad-to-rotor contact. Whether you're building a weekend cruiser or a high-performance street machine, this Wilwood rear brake kit provides the stopping power and reliability you demand.