Original Rolls Royce Spectre RR25 Rear Bumper

For the Rolls-Royce Spectre (RR25), the rear bumper is a masterclass in aerodynamic “monolithic” design. Because the Spectre is the first all-electric Rolls-Royce, the rear bumper differs significantly from its V12 siblings—it lacks exhaust cutouts entirely, focusing instead on a seamless, yacht-inspired “waft line.”

1. Component Identification & Part Numbers

The Spectre rear bumper is a multi-piece assembly. If you are sourcing one in 2026, you likely need the main cover or the lower valance.

2. Design Features: The “Island of Detail”

The rear bumper design is dictated by what Rolls-Royce calls the “Island of Detail.”

• Flush Surfaces: Unlike the Ghost or Phantom, the Spectre’s rear bumper is almost entirely flush to achieve a drag coefficient of 0.25cd.

• Vertical Taillamps: The bumper features precise cutouts for the jewel-like vertical LED taillamps, which are colorless when off to blend into the bodywork.

• Lack of Exhausts: The lower section is characterized by a smooth, wind-sculpted diffuser that channels air from under the flat battery floor to reduce turbulence.

3. Market Value (2026)

The Spectre is still a low-volume, high-value vehicle. Parts are priced accordingly:

4. Technical Components & Sensors

A “Complete” Spectre bumper must house a suite of high-tech sensors. If you are replacing a damaged unit, you will need to transfer or replace:

1. 6x PDC Sensors: Ultrasonic parking sensors.

2. Haptic/Hands-Free Trunk Sensor: Located behind the lower valance for “kick-to-open” functionality.

3. Rear Blind Spot Radars: Often mounted to brackets inside the bumper corners.

4. Wiring Harness: The Spectre uses specialized shielded cabling to prevent electromagnetic interference (EMI) from the high-voltage EV drivetrain.

5. Installation & Calibration

• Paint Code: Ensure you have the 10-digit Rolls-Royce paint code (e.g., English White or Chartreuse). The Spectre’s paint is often applied in thicker layers than standard cars, requiring a specialist to match the depth and “mirror finish.”

• Software Marriage: Once installed, the rear radar and PDC modules must be re-calibrated. Because the Spectre is highly connected (141,000 sender-receiver functions), a simple hardware swap without a Rolls-Royce diagnostic tool (ISTA/P equivalent) will result in restricted driving mode or ADAS errors.