Rear spoiler - 812 Superfast Mansory for Ferrari 812 Superfast Stallone

Rear Spoiler Mansory Carbon for Ferrari 812 Superfast Stallone

For owners who want rear-axle aerodynamic load without the elevated visual profile of a full stanchion-mounted wing, the Mansory carbon rear spoiler for the Ferrari 812 Superfast Stallone is the precisely calibrated alternative. Mounted at the boot-lid trailing lip, the spoiler works as a Gurney flap — interrupting boundary-layer separation at the boot edge and using the resulting low-pressure wake to generate downward force on the boot lid structure and rear axle. As part of the Mansory Body Kit for Ferrari 812 Superfast Stallone, it is the choice for owners whose driving is predominantly fast road use: the spoiler delivers meaningful aero stability at motorway speeds while preserving the 812 Superfast's characteristic long-tail GT silhouette that the stanchion-mounted rear wing, by design, deliberately disrupts.

Construction & Materials

This spoiler is produced from pre-preg carbon fibre cured at 125 °C and 3 bar in the autoclave. The thin-profile blade uses 3K twill at ±45° with a secondary unidirectional chord-wise reinforcement layer that prevents high-frequency flutter — the resonant vibration that thin-section aero blades develop at sustained speeds where underbody turbulence excites natural frequency modes. The mounting flange is a heavier 2K plain-weave laminate machined to match the 812 Superfast's boot-lid trailing-edge profile within 0.3 mm, ensuring a gapless contact that eliminates the visible seam between the spoiler base and the lacquered boot-lid surface.

Installation is non-destructive: the spoiler bonds via three-point 3M VHB 5952 tape plus two M6 bolts into OEM-tapped positions that Ferrari pre-engineered into the boot-lid reinforcement rib for the factory lip-spoiler provision. This reversible approach means the spoiler can be removed without paint damage — an advantage over the rear wing for owners who may attend Ferrari events where factory authenticity is assessed. The spoiler weighs approximately 0.9 kg versus the rear wing's 2.6 kg, with no measurable effect on boot-lid hinge spring balance.

• Blade: 3K twill ±45° with UD chord reinforcement against flutter
• Flange: 2K plain-weave carbon, machined to 0.3 mm boot-lid profile tolerance
• Cure: autoclave 125 °C / 3 bar — void content <1 %
• Weight: approx. 0.9 kg — no effect on boot-lid hinge balance
• Attachment: 3M VHB 5952 + two M6 bolts to OEM pre-tapped boot-lid positions
• No drilling required — fully reversible installation
• Finish: UV-stable gloss clear lacquer; matte and satin on request

Design & Visual Function

The spoiler's aerodynamic mechanism differs from the full wing's in a fundamental way. A wing generates suction-based downforce on its lower surface in freestream air above the body. A Gurney-flap spoiler at the boot trailing edge interrupts the controlled flow separation that would otherwise occur at the boot lip, establishing a low-pressure recirculation zone immediately aft of the blade. This zone exerts suction on the boot-lid surface, generating rear-axle load through the car's body structure rather than through a dedicated aero surface. The mechanism is body-integrated, which means the drag increment per kilogram of downforce is proportionally lower than the full wing's at road-speed ranges.

At 200 km/h the spoiler generates approximately 18–25 kg of rear-axle load — around one-third of the full wing's contribution. For road use, this eliminates the light, disconnected rear feel that some owners report on the stock 812 Superfast at sustained autobahn speeds, where the car's body generates net rear-axle lift in OEM configuration. Combined with the Mansory rear kit's functional diffuser, total rear-axle aerodynamic load with the spoiler reaches 55–70 kg at 200 km/h — approaching the full wing number without its boot-lid drilling, elevated drag, or visual intrusion above the roofline.

The spoiler integrates into the 812 Superfast's roofline in a way that the full wing intentionally does not. From the three-quarter rear, the blade reads as a defined carbon accent at the boot-lid trailing edge — enough to signal the car's modified identity to an informed observer without disrupting the Ferrari's GT roofline sweep. Many owners describe the result as resembling a factory Atelier option rather than an aftermarket addition, which is precisely the aesthetic Mansory targets with this component's profile dimensions.

Compatibility & Fitment

Fits the Ferrari 812 Superfast coupe on the F140 platform, 2017–2022. Uses the two OEM tapped holes in the boot-lid reinforcement rib that Ferrari pre-machined for the factory lip-spoiler provision. LHD and RHD equally served by the symmetric geometry. The 812 GTS is not compatible. Owners choosing between spoiler and rear wing should note that both occupy the boot-lid trailing-edge position and cannot be used simultaneously, but the spoiler's reversible installation means a transition to the rear wing later is achievable without paint damage.

Installation & Reversibility

Installs in 45–60 minutes. Clean the boot-lid trailing-edge surface with isopropyl alcohol, apply the 3M VHB tape strips to the mounting flange, align to the boot-lid centreline using the supplied template, and press firmly along the full bonding length. Allow 24 hours before high-speed use. Torque the two M6 bolts to 5 Nm after the VHB cure period. Removal requires a heat gun at 60–70 °C applied to the bonding zone; the adhesive softens and releases without tearing the paint surface. A Mansory-authorised bodyshop is recommended for both fitting and removal.

Pairing within the Mansory 812 Superfast Stallone Programme

The rear spoiler pairs naturally with the Mansory Rear Kit, whose integrated diffuser acts at lower speeds where the spoiler's Gurney-flap mechanism is less effective, creating a combined rear-aero system with progressive downforce across the full speed range. For the thermal management of the V12's exhaust, the Rear Bumper Air-Outtake Grills complete the heat-extraction circuit within the rear kit apertures. The Mansory Rear Panel resolves the geometry between the arch, bumper, and spoiler base, completing the rear composition as a unified carbon assembly.

Maintenance & Durability

The spoiler's position at the boot trailing edge keeps it above the heaviest road spray but directly in the slipstream at speed. Wash with pH-neutral shampoo and microfibre; apply ceramic coating to the upper blade face annually. Inspect the VHB bond line at each service interval by pressing along the perimeter — any lift requires re-bonding before high-speed use. Check the two M6 bolt torques annually. Avoid alkaline or solvent cleaners near the lacquer. Lacquer yellowing begins after 8–12 years under normal road exposure.

Lead Time & Warranty

Rear spoiler lead time is 3–4 weeks from confirmed order. The 12-month manufacturing warranty covers delamination and void formation. Bond release from heat exposure, installation error, and impact damage are outside warranty scope.

FAQ

Q: How does the spoiler compare to the full wing, and when is the wing the better choice?
A: The spoiler generates 18–25 kg at 200 km/h; the wing generates 55–70 kg. For road use, the spoiler's contribution eliminates high-speed instability with lower drag and no boot-lid drilling. For dedicated circuit use where maximum rear traction under the 789 hp V12 is the priority, the full rear wing is the appropriate choice.

Q: Is the boot-lid paint genuinely undamaged after spoiler removal?
A: Yes, provided heat-gun release is done correctly. The 3M VHB 5952 softens at 60–70 °C and releases without tearing paint. The two OEM tapped holes are factory features requiring no repair. A professional bodyshop should perform removal to ensure the correct technique is applied on the first attempt.

Q: Does the spoiler affect boot-lid opening travel or the rear-screen sightline?
A: No. The blade projects 38 mm above the boot-lid trailing edge — within the rear screen's visual geometry. Boot-lid opening travel is unaffected. The rear-view camera angle is unchanged, and the boot lid opens to its full design angle with the spoiler installed.

Q: Can the spoiler and the rear diffuser be used together?
A: Yes — they are entirely complementary. The diffuser generates rear-axle downforce through underbody pressure recovery; the spoiler generates downforce at the boot-lid trailing edge through boundary-layer disruption. Both mechanisms are independent and their contributions are additive. Running both gives 55–70 kg total rear-axle load at 200 km/h — approaching the full-wing specification.

Q: Does the matte finish show contamination more than gloss on this component?
A: Both accumulate similar road film on the forward-facing blade face. Gloss lacquer allows single-pass microfibre removal; matte requires non-abrasive technique to avoid creating localised sheen patches where the surface texture is polished smooth. For practical daily-use maintenance, gloss is the lower-effort choice for a component in the spoiler's direct-slipstream position.

View the complete rear Stallone build at Mansory Body Kit for Ferrari 812 Superfast Stallone. Enquire via WhatsApp +44 7488 818 747 or [email protected] for a build consultation and delivery schedule.