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2-Piece Floating Rear Rotors for JK Wranglers That Push the Limits
Step up to the RFK.392.03 Rotora Street Challenge Rear Brake System for your 2007-2018 Jeep Wrangler JK and get the thermal advantages of a 350x29mm 2-piece floating rotor paired with a 4-piston RF404 forged caliper. Better heat management at the rear axle means more consistent braking feel during sustained hard use.
Key Features
- 4-piston RF404 forged aluminum caliper for strong, consistent rear clamping force
- 350x29mm 2-piece floating rotor for improved heat dissipation
- 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 RF404 caliper included
- Engineered for consistent braking feel during sustained hard use
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.392.03 |
| Caliper Type | 4-piston RF404 forged aluminum |
| Rotor Size | 350x29mm |
| Rotor Type | 2-piece floating 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 RF404 4-piston forged aluminum calipers
- 2x 350x29mm 2-piece floating 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.392.03?RFK.392.03 is a Rotora Street Challenge rear brake system for the 2007-2018 Jeep Wrangler JK, featuring a 4-piston RF404 forged aluminum caliper and a 350x29mm 2-piece floating rotor.
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.392.03 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 RF404 caliper are included with this kit.
Is this a front or rear brake system?RFK.392.03 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.
Why use a 2-piece floating rotor at the rear?A 2-piece floating rotor design allows the rotor face to expand and contract independently of the hat, reducing warping and improving heat management during sustained hard use.
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 350x29mm 2-piece floating rotors onto the rear hubs.
- Mount the RF404 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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