Wilwood 140-18258-D Front FNSL6R Big Brake Kit for Nissan Skyline 1999-2002

The Wilwood 140-18258-D is a front big brake kit built around the legendary Forged Narrow Superlite 6R (FNSL6R) six-piston caliper, delivering exceptional stopping power for the 1999–2002 Nissan Skyline. Engineered specifically for this application, this kit fits cleanly into OEM wheel packaging while remaining fully compatible with the factory master cylinder and ABS system.

This kit supports 13" to 14" rotors, providing a substantial upgrade in brake capacity over the stock setup — ideal for enthusiasts running the Skyline on the street, track, or show circuit. The upgrade pairs naturally with wheel, tire, and suspension modifications common on high-performance builds.

Key Features:

• Forged Narrow Superlite 6R caliper — six-piston monoblock design for maximum clamping force and rigidity
• Application-specific engineering — simplified installation with no custom fabrication required
• OE master cylinder compatibility — maintains proper pedal feel and brake bias
• ABS compatible — preserves factory ABS function where equipped
• Big rotor support — fits 13"–14" rotor diameters for increased swept area and heat dissipation
• Optional caliper finishes — available in multiple colors to complement your build's style
• Optional rotor designs — choose from drilled, slotted, or combination rotor configurations
• Ideal for street/track and show car applications

Wilwood's FNSL6R front big brake kit is a purpose-built performance upgrade that delivers the braking confidence demanded by modified and high-output Skyline builds. The "D" suffix denotes a specific rotor or finish variant — verify your desired configuration at time of order.