Wilwood 12.88-inch Front Brake System for Nissan 240SX (1989–1998), Skyline (1989–1994) and 300ZX (1990–1996) — GT Slotted Rotors, Black FNSL6R

Wilwood's black FNSL6R front package combines six-piston calipers and BP-20 pads with 12.88 x 1.25-inch GT slotted rotors. Aluminum hats provide both four- and five-lug 4.50-inch patterns for the specified Nissan hubs, while separate registration adapters address the 240SX and Skyline installations. Bill Wood established Wilwood Engineering in 1977. From Camarillo, California, the company designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines, for motorsport, street-performance and specialized applications.

Technical Details

Kit contents and separate parts

• Manufacturer part number: 140-18243
• Supply: one brake kit; components for both sides of the axle
• Mounting hardware: included
• Hubs: not included
• Spindles, master cylinder and brake booster: not included
• Brake flexlines: not included
• Related installation parts to select for the application: 220-18241; 220-12862

Fitment & Compatibility

Retains the factory front hubs on the specified 1989–1998 Nissan 240SX, 1989–1994 Skyline and 1990–1996 300ZX applications. The hat accepts four- and five-lug 4.50-inch stud patterns; this clearance arrangement does not convert the hub to another wheel pattern. Select the registration adapters and mounting bolts for the particular Nissan upright, following the instructions for the 240SX and Skyline. Trim the dust shield as directed. This 12.88-inch package requires separately purchased vehicle-specific flexlines. The table identifies the ABS and trim restrictions that must also be satisfied. Nominal minimum wheel diameter: 17 in; 431.8 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.

Rotors and mounting dimensions

• Rotors: 12.88 in; 327.15 mm diameter x 1.25 in; 31.75 mm thick; vented Spec-37 Iron
• Friction faces: GT Slotted
• Rotor coating/finish: Black Electro Coat
• Internal vanes: 48 curved
• Hats: Aluminum; Black E-Coat; 0.595-inch hat offset
• Rotor/hat wheel-stud clearance patterns: 4 x 4.5 in; 4 x 114.3 mm; 5 x 4.5 in; 5 x 114.3 mm

Calipers and pads

• Calipers: FNSL6R; 6 pistons
• Caliper finish: Black Powder Coat
• Body construction: Forged aluminum
• Pistons: stainless
• Mounting: radial
• Hydraulic inlet: 1/8-27 NPT
• Included pad compound: BP-20
• Listed piston bore sizes: 1.62 / 1.12 / 1.12 in

Installation documents

• Installation instructions

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

PMB Performance has supported brake and restoration projects for more than 20 years. Share your vehicle and installed chassis hardware with us for help selecting the correct brake package.

Vehicle Applications

Application Notes

1. Line kit included (manufacturer): None
2. Front line-kit reference: 220-18241, 220-12862