Ferrari SF90 Rear Bumper 939417 777124
The Ferrari SF90 rear bumper assembly is the complete OEM rear aerodynamic bumper system designed for the SF90 Stradale and SF90 Spider. It integrates the rear diffuser architecture, cooling airflow channels, parking sensor provisions, and active aerodynamic components required for Ferrari’s hybrid flagship platform.
OEM Overview
Part Number: 985939417
- Genuine Ferrari rear bumper assembly
- Listed as “Complete Rear Bumper” / “Complete Rear Mesh”
- Factory fitment for Ferrari SF90 models
- Superseded by newer part number 985883511 on certain specifications and markets.
Part Number: 777124
- Associated rear bumper structural/aerodynamic component used within the SF90 rear assembly configuration.
- Fitment depends on market version, camera package, and aerodynamic specification.
Vehicle Compatibility
Compatible with:
- Ferrari SF90 Stradale
- Ferrari SF90 Spider
Different bumper versions exist depending on:
- Rear parking camera
- Surround-view system
- Radar equipment
- Regional homologation requirements.
Function
The rear bumper assembly performs several critical functions:
- Houses rear diffuser components
- Supports active aerodynamic systems
- Integrates parking sensors and cameras
- Directs airflow around the rear body structure
- Assists cooling airflow management
- Protects rear chassis components
Aerodynamic Design
The SF90 rear bumper was developed alongside Ferrari’s active aero package.
Key features include:
Rear Airflow Management
- Controls airflow exiting the underbody
- Improves diffuser efficiency
- Enhances rear stability at high speed
Diffuser Integration
- Works with the rear underbody
- Generates rear downforce
- Reduces aerodynamic turbulence
Active Aero Compatibility
- Designed to operate with Ferrari’s rear aerodynamic systems
- Supports the vehicle’s electronically managed airflow strategy
Construction
Depending on specification:
Standard Version
- Lightweight reinforced composite construction
- Integrated mounting points for sensors and trim
Carbon Version
Some assemblies are supplied with:
- Carbon rear diffuser
- Carbon aerodynamic trim
- Carbon rear mesh package
Carbon-equipped rear bumper packages using part number 985939417 are available in OEM and performance configurations.
Key Characteristics
- Genuine Ferrari SF90 rear bumper assembly
- OEM part number 985939417
- Compatible with SF90 Stradale and Spider
- Integrated diffuser and aerodynamic architecture
- Parking camera and sensor compatible
- Available in standard and carbon-equipped configurations
- Superseded by 985883511 on selected applications
Common Uses
- Rear-end collision repair
- Complete rear body restoration
- Carbon aerodynamic upgrades
- SF90 rebuild projects
- OEM replacement installations















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