Rear kit Mansory Carbon for Ferrari 812 Superfast Stallone

Rear Kit Mansory Carbon for Ferrari 812 Superfast Stallone

The rear end of the Ferrari 812 Superfast Stallone carries the programme's most aerodynamically complex geometry, and Mansory's complete carbon rear kit addresses it as a unified system. Comprising the rear bumper architecture, two-channel diffuser panel, and widened wheel-arch extensions, this kit is the rear anchor of the Mansory Body Kit for Ferrari 812 Superfast Stallone. Where Ferrari's OEM rear assembly balanced exhaust heat management, tyre clearance, and visual harmony for a production audience, the Stallone rear kit reconfigures all three for a car with 42 mm of additional rear-track width, a functional diffuser, and the visual language of a competition GT programme. It is the specification that most completely transforms the 812 Superfast's rear identity — replacing grand touring restraint with purposeful wide-arch aggression in a single body change.

Construction & Materials

Mansory builds the rear kit from aerospace pre-preg carbon fibre cured at 125 °C and 3 bar in a 120-minute autoclave cycle, achieving void content below 1 % throughout. External surfaces use 3K twill weave in a symmetric ±45° orientation — the Mansory signature diagonal lattice. Structural elements including diffuser mounting ribs and arch-extension flanges incorporate unidirectional carbon tows along the primary stress axes for concentrated stiffness without excess mass elsewhere in the assembly.

The diffuser panel's lower face is laminated with 2K plain-weave carbon sealed with an epoxy barrier coat for road-surface abrasion resistance. The kit attaches to existing Ferrari chassis points via M6 and M8 stainless fasteners — no new holes required. The complete assembly weighs approximately 8.4 kg, saving around 4.2 kg versus the production plastic rear fascia and quarter-valance. This mass reduction from the rear axle reduces sprung mass at the rear and marginally improves the car's balance response during transient load transfer.

• Weave: 3K twill on all exterior faces; 2K plain on diffuser underside
• Cure: autoclave 125 °C / 3 bar, 120-minute dwell — void content <1 %
• Wall thickness: 2.2 mm main panels, 3.8 mm at wheel-arch flanges
• Complete kit weight: approx. 8.4 kg vs. ~12.6 kg OEM rear assembly
• Fastening: M6/M8 stainless to OEM chassis points — no new drilling
• Secondary bond: 3M VHB 5952 at inner quarter-panel mating faces
• Finish: UV-stable gloss clear lacquer; matte or satin available

Design & Visual Function

The kit's architecture organises around three priorities: rear-axle downforce, exhaust heat extraction, and widened wheel-arch clearance. The diffuser uses a two-channel geometry with a central separation blade that channels underbody air into a controlled expansion zone, generating rear-axle downforce through Bernoulli pressure recovery. At 200 km/h the diffuser contributes an estimated 35–45 kg of rear-axle load — more than the front splitter's contribution, aerodynamically correct for a rear-wheel-drive GT with a heavy front-mounted engine that naturally pushes its own nose toward the road surface.

The bumper's thermal architecture addresses a naturally aspirated V12-specific challenge: at 8500 rpm the F140 GA's four exhaust outlets discharge a high-volume, high-temperature gas flow that saturates the rear bumper cavity if not actively managed. Dedicated exit apertures in the upper bumper section allow this thermal mass to escape rearward, preventing heat soak of the tyre sidewall and rear quarter zone that prolongs predictable rear tyre behaviour during track use. The kit's exit aperture geometry works in tandem with the Mansory rear bumper grills, which direct the extracted hot air downward and away from the rear aerodynamic wake.

Visually, the rear kit makes the 812 Superfast read as a wide-haunched GT competition machine. The expanded arches frame the rear tyres with track-specification tightness, the diffuser blade projects purposefully below the bumper lower edge, and the 3K twill weave contrasts against the body colour with a visual depth that rewards close examination. Against dark body colours the diffuser blade's ribbed geometry creates a shadow play that anchors the car's rear visual mass; against Bianco Avus (code 11) the weave reads as a textured accent against the paint plane.

Compatibility & Fitment

Designed for the Ferrari 812 Superfast on the F140 platform, 2017–2022. Ferrari made no structural changes to the rear body mounting architecture during this period, confirming uniform fitment across all chassis numbers. The kit does not fit the 812 GTS without modification. LHD and RHD are equally served. All OEM rear sensor positions — reverse parking sensors and rear camera — are replicated in the Mansory fascia. Exhaust tip apertures are sized for both the standard stainless and optional Inconel exhaust systems.

Installation & Reversibility

Rear kit installation is a 4–5 hour professional bodyshop task. Disconnect the reverse-sensor harness and rear-camera cable, remove the OEM rear bumper — twelve perimeter fasteners plus six arch-liner clips. Mansory's rear alignment jig references the diffuser lower edge to the exhaust centreline; use it before torquing any bolts. Primary bolts torque to 8 Nm (M6) and 16 Nm (M8); 3M VHB bonding flanges at inner quarter-panel faces require 24 hours cure before road use. All OEM mounting points are preserved. A Mansory-authorised installer is recommended to protect paint warranty on adjacent bonded surfaces.

Pairing within the Mansory 812 Superfast Stallone Programme

The rear kit hosts the rear programme's individual components. The Mansory Rear Wing mounts to the boot-lid integration panel, adding high-speed downforce beyond what the diffuser generates at moderate speeds. For a lower-profile aero solution, the Mansory Rear Spoiler provides boot-lid Gurney-flap load without visual intrusion above the roofline. The kit's thermal duct apertures pair directly with the Rear Bumper Air-Outtake Grills, completing the heat-management circuit for the V12's naturally aspirated exhaust environment.

Maintenance & Durability

Wash with pH-neutral automotive shampoo and a microfibre mitt; rinse at low pressure, nozzle at least 30 cm from carbon surfaces. The diffuser underside accumulates road grime and exhaust carbon deposit — clean after each track session. Rear tyre spray attacks the arch-extension leading edges; clear PPF on these zones before first road use is the most cost-effective protection. Ammonia, MEK, and acetone-based products must never contact the lacquered carbon. The exhaust-zone apertures accumulate soot from the V12's naturally aspirated exhaust; wipe with isopropyl alcohol at each service. Lacquer yellowing typically begins after 8–12 years under normal road use.

Lead Time & Warranty

Full rear kit lead time is 5–7 weeks from confirmed order. The 12-month Mansory manufacturing warranty covers delamination, void formation, and dimensional non-conformance. Impact damage and installation error are outside warranty scope.

FAQ

Q: Does the rear kit fit all 812 Superfast production years without modification?
A: Yes — Ferrari made no changes to the 812 Superfast's rear body mounting structure between 2017 and 2022. Mansory confirms uniform fitment across all chassis numbers, including those with the optional Inconel exhaust and the early production run's optional rear diffuser blanking panels.

Q: Is the diffuser functional or purely cosmetic?
A: The two-channel diffuser is fully functional. The central separation blade creates distinct pressure-recovery zones in each channel, delivering 35–45 kg of rear-axle load at 200 km/h. This is measurable in the car's high-speed stability — the rear end feels more firmly planted under the V12's full 789 hp at speed.

Q: Can the rear kit be fitted independently without a simultaneous front kit change?
A: Yes. The rear kit is a self-contained body change requiring no front modifications. Many owners fit the rear kit first — it delivers the widest individual transformation of the car's rear identity — while planning the front build for a subsequent stage.

Q: Does the kit include all hardware for reinstating the OEM sensors and rear camera?
A: Yes. The kit includes all fastener sets, alignment jig, and sensor aperture inserts. OEM reverse sensors and the factory rear camera reinstall directly into pre-drilled positions using original mounting hardware without additional brackets or wiring modifications.

Q: If ordering the rear and front kit together, do the lead times run concurrently?
A: Yes. Mansory's production scheduling batches same-programme orders together where possible, so combined front-and-rear kit orders typically complete within the longer of the two lead times — 5–7 weeks for the rear — rather than sequentially. Confirm at order placement.

Explore the full Stallone specification at Mansory Body Kit for Ferrari 812 Superfast Stallone. Contact us via WhatsApp +44 7488 818 747 or [email protected] for build guidance and current lead times.