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A Real Rear Brake Upgrade for the JK Wrangler That Works Hard
The RFK.392.02 Rotora Street Challenge Rear Brake System gives the 2007-2018 Jeep Wrangler JK a proper rear brake upgrade with a 4-piston RF419 forged caliper and 328x28mm disc. Whether you use the JK on the trail, the street, or both, this rear brake system delivers improved clamping force and pedal feel over the factory setup.
Key Features
- 4-piston RF419 forged aluminum caliper for improved rear clamping force
- 328x28mm rotor for consistent rear brake performance
- Direct bolt-on fitment for the rear axle, no permanent modification required
- Available in 10 caliper finishes including Zinc
- Slotted or Drilled rotor face options to match braking preference
- Stainless steel braided brake lines included for firmer pedal feel
- Performance brake pads matched to the RF419 caliper included
- Built to handle trail and street use without sacrificing durability
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2007-2018 | Jeep | Wrangler JK | Sport |
| 2007-2018 | Jeep | Wrangler JK | Rubicon |
| 2007-2018 | Jeep | Wrangler JK | Sahara |
Specifications
| Detail | Value |
|---|---|
| MPN | RFK.392.02 |
| Caliper Type | 4-piston RF419 forged aluminum |
| Rotor Size | 328x28mm |
| Rotor Type | 1-piece disc |
| Position | Rear |
| Finish Options | 10 caliper colors, Slotted or Drilled rotor |
| Fitment | 2007-2018 Jeep Wrangler JK |
| Warranty | Manufacturer limited warranty |
What's Included
- 2x RF419 4-piston forged aluminum calipers
- 2x 328x28mm rotors
- Stainless steel braided brake lines
- Mounting brackets and hardware
- Performance brake pads
About Rotora
Rotora designs and manufactures big brake kits for street and off-road enthusiasts, engineering forged aluminum calipers and precision rotors that deliver consistent stopping power under demanding conditions.
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FAQ
What is RFK.392.02?RFK.392.02 is a Rotora Street Challenge rear brake system for the 2007-2018 Jeep Wrangler JK, featuring a 4-piston RF419 forged aluminum caliper and a 328x28mm disc.
Does this kit fit all Jeep Wrangler JK trims from 2007 to 2018?Yes, this kit is designed to fit the rear axle of Jeep Wrangler JK models across the 2007-2018 model years, including Sport, Rubicon, and Sahara trims.
What caliper colors are available?RFK.392.02 is available in 10 caliper finishes, including Red, Dark Metallic Blue, Silver, Gloss Black, Green, Orange, Light Metallic Blue, White, Black Hard-Anodize Finish, Yellow, and Zinc.
What is the difference between Slotted and Drilled rotors?Slotted rotors clear gas and debris from the pad surface, while Drilled rotors add additional cooling channels through the rotor face. Both are available for this kit.
Does this kit include brake pads?Yes, performance brake pads matched to the RF419 caliper are included with this kit.
Is this a front or rear brake system?RFK.392.02 is a rear brake system. A matching front system is available separately for the 2007-2018 Jeep Wrangler JK.
Will I need to modify my JK Wrangler to install this kit?No, this kit is designed for direct bolt-on installation on the rear axle without permanent modification.
Is this kit suitable for trail and off-road use?Yes, the RFK.392.02 rear brake system is built to handle both street and trail conditions on the JK Wrangler.
Install Instructions
- Lift the vehicle and secure it on jack stands, then remove the rear wheels.
- Remove the factory rear calipers and disconnect the brake lines.
- Remove the factory rear rotors and brake hardware.
- Install the new 328x28mm rotors onto the rear hubs.
- Mount the RF419 4-piston calipers using the supplied brackets and hardware.
- Install the included performance brake pads into the calipers.
- Connect the new stainless steel braided brake lines and torque all fittings.
- Bleed the brake system thoroughly and check for leaks.
- Reinstall the wheels, torque to spec, and bed in the new brakes before hard driving.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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