Wilwood 140-18243 Forged Narrow Superlite 6R Front Big Brake Kit 12.88in

The Wilwood 140-18243 is a Forged Narrow Superlite 6R (FNSL6R) Front Big Brake Kit featuring a 12.88-inch rotor, engineered specifically for the Nissan 240SX (S13/S14, 1989–1998). This bolt-on big brake upgrade delivers a dramatic increase in braking performance and thermal capacity over the factory setup, making it an ideal choice for high-performance street driving, autocross, and track day use.

At the heart of this kit is the Forged Narrow Superlite 6R six-piston caliper—a competition-proven design with a forged billet aluminum body and three pistons per side for exceptional clamping force and pad wear distribution. The caliper's narrow profile is designed to fit behind a wide range of aftermarket wheels without clearance issues.

Key Features:

• Forged Narrow Superlite 6R (FNSL6R) six-piston caliper with forged billet aluminum construction
• 12.88-inch diameter rotor for significantly increased braking surface and heat dissipation
• Application-specific engineering for simplified, bolt-on installation
• Fully compatible with OE master cylinder output and factory ABS systems where equipped
• Engineered for the Nissan 240SX S13/S14 (1989–1998) platform
• Available in multiple caliper finish options to complement custom builds
• Multiple rotor designs available (slotted, drilled, or smooth) to match performance and styling needs
• Ideal for show cars and high-performance street/track machines paired with wheel, tire, and suspension upgrades

The Wilwood 140-18243 FNSL6R front big brake kit is a complete, ready-to-install package that transforms the stopping power of your Nissan 240SX while adding a premium, race-inspired aesthetic behind the wheel.