The Wilwood Forged Narrow Superlite 4R front big brake kit upgrades the Jeep Wrangler JK with four-piston forged aluminum calipers and 14.00 inch vented rotors. The GT 72 curved-vane rotors are cast from Spec-37 iron with a slotted face for high-temperature durability. The kit mounts to the factory disc spindles, requires a minimum 18 inch wheel diameter, and is engineered for compatibility with the OE master cylinder output and ABS.
| Type | 4-Piston Forged Narrow Superlite 4R Front Big Brake Kit |
| Position | Front |
| Material | Forged aluminum calipers, Spec-37 iron rotors |
| Finish | Black calipers, GT slotted rotors |
| Size | 14.00 in rotor diameter |
| Fitment Note | Requires minimum 18 in wheel diameter |
| Quantity | Front axle kit (2 calipers, 2 rotors, pads, brackets, hardware) |
| Part Number | 140-12440 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011 | Jeep | Wrangler | 70th Anniversary |
| 2007-2015 | Jeep | Wrangler | Rubicon |
| 2007-2015 | Jeep | Wrangler | Sahara |
| 2010-2015 | Jeep | Wrangler | Sport |
| 2011 | Jeep | Wrangler | Unlimited 70th Anniversary |
| 2007-2015 | Jeep | Wrangler | Unlimited Rubicon |
| 2007-2015 | Jeep | Wrangler | Unlimited Sahara |
| 2010-2015 | Jeep | Wrangler | Unlimited Sport |
| 2007-2010 | Jeep | Wrangler | Unlimited X |
| 2007-2010 | Jeep | Wrangler | X |
