Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
A 14.00 x 1.25-inch GT disc package sets this black R34 front kit apart from the smaller rotor option. Six-piston FNSL6R calipers use BP-20 pads, and the included hats and braided hoses are configured for the 1999–2002 Skyline installation. Wilwood Engineering designs and manufactures disc brake systems and components, including calipers, brake rotors, master cylinders, valves, fittings and brake lines. Bill Wood founded the company in 1977; it is based in Camarillo, California, and serves motorsport, street-performance and specialized applications.
Fitment & Compatibility
Designed around the 1999–2002 Skyline R34 factory front hub and disc spindle, this FNSL6R package uses 14-inch rotors. Match the existing hub register and wheel-stud clearance to the hats before the brackets are shimmed into position. Stainless braided flexlines are part of the kit, with routing checked across the complete steering and suspension travel. Follow the dust-shield trimming instructions and confirm the larger rotor/caliper envelope against the wheel template. Modified studs or hubs require their own dimensional checks and may need machining. Nominal minimum wheel diameter: 18 in; 457.2 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.
Technical Details
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: 1.75 / 1.25 / 1.25 in
Rotors and mounting dimensions
- Rotors: 14.00 in; 355.6 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: 72 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
Kit contents and separate parts
- Manufacturer part number: 140-18258
- 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: included; DOT-compliant hoses
Installation documents
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.
With over 20 years of experience in brake systems and restoration, PMB Performance can help check the mounting arrangement, wheel clearance and remaining installation parts for your build.
