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Instruction Sheets for Part Number WIL-140-12440
Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kits for 2007-2018 WRANGLER, 2018 WRANGLER JK - 140-12440
Part Number: WIL-140-12440
Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kits
Disc Brakes, Forged Narrow Superlite 6R Big Brake, Front, Slotted Surface Rotors, Black Calipers, Jeep, Kit
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Estimated Ship Date: Apr 7, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
140-12440
Part Type:
Product Line:
Summit Racing Part Number:
WIL-140-12440
UPC:
889545016468
Position:
Front
Front Rotor Included:
Yes
Front Rotor Style:
Slotted surface
Front Rotor Construction:
Vented
Front Rotor Diameter:
14.00 in./355.60mm
Front Rotor Thickness (in.):
1.25 in.
Brake Rotor Bolt Pattern (in.):
5 x 5.00 in.
Brake Rotor Bolt Pattern (mm):
5 x 127.00mm
Rear Rotor Included:
No
Front Caliper Included:
Yes
Front Caliper Piston Quantity:
Six
Front Caliper Material:
Forged billet aluminum
Front Caliper Color:
Black
Rear Caliper Included:
No
Brake Pads Included:
Yes
Friction Material Name:
BP-20
Parking Brake Provision:
No
Minimum Recommended Wheel Diameter (in.):
18 in.
Front Spindles Included:
No
Master Cylinder Included:
No
Brake Booster Included:
No
Remanufactured:
No
Brake Hoses Included:
No
Quantity:
Sold as a kit.
Notes:
Designed for use with factory disc spindles.
Wilwood Forged Narrow Superlite 4R Big Brake Front Brake Kits
Lifted 4x4s with taller and heavier tire and wheel combinations need Wilwood Forged Narrow Superlite 4R big brake front brake kits to restore stopping power. SL4 kits are specifically engineered per application, but all revolve around Forged Narow Superlite 4R four-piston stainless steel calipers with their 4-symmetrical bores and high clamping force. Oversized, proprietary iron alloy, Spec 37 rotors withstand extreme temperatures and have a high degree of resistance to warping, cracking, distortion, and wear. Both of these parts are built to work hard without issues, but Wilwood's kit doesn't stop there. They also feature forged aluminum mounting hats, BP-10 Smart Pads to increase friction and reduce pad dust, radial mounting brackets, and hardware. Custom wheels and tall tires give character and off-road prowess, but if you can't stop them you're destined to hurt yourself and many others. Wilwood Forged Narrow Superlite 4R big brake front brake kits will help reel in your beast.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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