Front-axle aerodynamic loading on a naturally aspirated front-engine GT is not a given — it must be engineered deliberately into the lower fascia geometry. The Mansory carbon splitter for the Ferrari 812 Superfast Stallone addresses this directly, extending the horizontal lower plane of the front bumper outward and downward to generate a high-pressure region beneath the front apron that pushes the axle toward the road surface at speed. As the primary front-axle load element within the Mansory Body Kit for Ferrari 812 Superfast Stallone, this splitter transforms the 812 Superfast's front aero balance from the OEM's neutral-to-slightly-understeer bias toward a more active front load profile — one that makes the car feel more planted at motorway speeds and more responsive to the V12's torque application on fast sweeping corners. It is the component that most directly affects the driving experience of any piece in the Stallone front package.
The splitter is manufactured from pre-preg carbon fibre cured in Mansory's autoclave at 125 °C and 3 bar over a two-hour cycle, achieving void content below 1 % and fibre-volume fractions above 55 %. The structural layup specifies 3K twill weave on the upper exposed face for the characteristic Mansory visual texture, with a unidirectional carbon sub-laminate oriented spanwise beneath it. This UD layer — running from the bumper attachment edge to the splitter's forward-projecting tip — carries the primary bending load generated when the horizontal plate is pushed upward by aerodynamic ground effect, preventing the deflection and tip vibration that affect thinner, purely woven laminates at speeds above 180 km/h.
The lower face of the splitter is a structural 2K plain-weave carbon laminate sealed with an epoxy gel coat to resist gravel abrasion and moisture ingress from the road surface below. The splitter's forward edge is reinforced with a 4 mm-radius carbon leading edge that resists stone chipping and provides a consistent separation point for the underbody airstream. Attachment to the bumper fascia uses four M6 stainless bolts to OEM-compatible captive nut positions, plus end-plate brackets that extend the splitter's structural span to the outer bumper corners. The entire assembly weighs approximately 1.4 kg — meaningful at this location ahead of the front axle.
The aerodynamic principle at work in a front splitter is straightforward but consequential. As the car moves forward, air decelerating against the front fascia creates a high-pressure stagnation region at the bumper face. The horizontal splitter plate intercepts this air at a height close to the road surface, where underbody velocity is highest and the pressure differential between the upper and lower surfaces of the plate is greatest. This differential generates a net downward force on the front axle — typically 20–30 kg at 200 km/h for a splitter of this planform area — that increases the effective normal force at the front tyre contact patches without any mass penalty. Because the F140 GA V12's 789 hp is deployed through the rear wheels alone, any improvement in front-axle stability directly translates to more neutral turn-in balance and better steering feedback at the limit.
The splitter's planform extends 55 mm forward of the bumper's lower lip in the standard Stallone geometry, a projection that maximises stagnation-pressure capture while maintaining adequate ground clearance on European road surfaces. The lateral end plates at the outer corners serve a dual function: they prevent pressure equalisation around the ends of the plate (which would reduce downforce efficiency) and they act as vortex generators, shedding a pair of counter-rotating trailing vortices that energise the outer underbody boundary layer and delay separation aft of the wheel arches. This vortex effect has a secondary benefit: it reduces the turbulent wake ingested into the front brake-cooling ducts, maintaining a higher-quality, more laminar airstream in the brake-duct inlet throughout the speed range.
Visually, the splitter sharpens the front of the car considerably. Viewed from the approach angle — the classic three-quarter-front perspective — the projecting blade makes the Stallone nose read as genuinely aggressive rather than merely styled. The contrast between the exposed 3K twill upper face of the splitter and the painted or raw-carbon bumper fascia above creates a pronounced horizontal accent line that makes the car appear lower and wider, reinforcing the visual narrative of the Stallone programme's extended track dimensions. Against darker body colours the splitter is a subtle graphic element; against light colours such as Bianco Avus (code 11) or Argento Nürburgring (code 28) it draws the eye immediately.
The Mansory splitter is designed to fit both the Mansory carbon front bumper and the OEM Ferrari 812 Superfast bumper, covering all cars in the 2017–2022 production run. Fitment to the OEM bumper requires the use of the supplied adapter brackets, which compensate for the slightly different lower lip geometry of the factory fascia; fitment to the Mansory carbon bumper is direct to the captive nut positions without adaptation. LHD and RHD vehicles are both accommodated as the splitter is a symmetric component. The splitter's ground clearance in the standard Stallone geometry is 85 mm at the forward tip, which is adequate for normal road use on smooth surfaces but requires vigilance on steep driveways and speed-reduction strips — Mansory recommends the optional raised-clearance spacer for owners in areas with frequent surface-height transitions.
Splitter installation is a 30–45 minute task for a competent technician. The component ships with all M6 fastener hardware and the corner end-plate brackets pre-assembled. Offer the splitter to the bumper's lower lip with the car on a level surface and the suspension at ride height (not on a ramp), so the ground clearance datum can be confirmed before bolts are torqued. The four primary M6 bolts tighten to 6 Nm; the corner bracket bolts tighten to 4 Nm. No VHB tape is required for the splitter — the mechanical fixing is sufficient. The installation is fully reversible without tools beyond a 5 mm Allen key; the OEM bumper geometry is unaltered and the splitter can be removed and refitted in minutes at any Ferrari-authorised workshop.
The splitter works in direct functional partnership with the components that bound it. Immediately above it, the Mansory Carbon Front Bumper provides the structural wall from which the splitter extends, and the two components share a design language that makes them appear as a single piece when photographed from below. At the outer corners, the Race Flaps for Front Bumper protect the splitter's projecting end plates from kerb contact on circuits, which is the most common source of damage to splitter tips during track-day use. To complete the front axle's aerodynamic architecture, pair the splitter with the Mansory Carbon Front Fenders, whose arch vents and extended geometry integrate with the splitter's end-plate vortices to optimise front wheel-well airflow management at speed.
The splitter's lower face is the most exposed component surface in the entire Stallone kit, subject to continuous road grit abrasion, stone impacts, and occasional light contact with road imperfections. The epoxy gel coat on the lower face is formulated for this environment, but it will accumulate surface micro-scoring over time — treat this as normal operational wear rather than a maintenance failure. The upper 3K twill surface should be washed with pH-neutral shampoo and dried carefully; clear PPF is highly recommended on the upper leading-edge zone and the exposed end-plate faces. Never use a pressure washer aimed directly at the splitter's forward edge — the concentrated water stream can penetrate between the carbon laminate and the gel coat over multiple wash cycles and initiate delamination at the edge. For track-day use, inspect the splitter corners for kerb or debris contact after each session; small delamination spots at the tips can be stabilised with thin epoxy before they propagate. Replacement of a damaged splitter is straightforward given the four-bolt attachment — having a spare in the paddock for intensive track programmes is a practical option given the 2–4 week lead time.
Splitter lead time is 2–4 weeks from order confirmation. The component carries a 12-month manufacturing warranty against delamination, void formation, and dimensional non-conformance. Kerb-contact damage, road-surface abrasion, and damage arising from ground clearance misjudgement are not covered under the manufacturing warranty.
Q: Does the splitter reduce road clearance enough to cause problems on normal driveways?
A: The standard Stallone splitter geometry gives 85 mm of ground clearance at the forward tip. Most road surfaces and moderate-incline driveways are navigated without contact.
Q: How much front-axle downforce does this splitter add at motorway speeds?
A: At 200 km/h the splitter generates approximately 22–28 kg of front-axle downforce depending on road surface height and front ride height.
Q: Can the splitter be used on the stock OEM bumper or only with the Mansory carbon bumper?
A: The splitter fits both the OEM Ferrari 812 Superfast bumper and the Mansory carbon front bumper. Fitting to the OEM bumper uses the included adapter brackets; fitting to the Mansory carbon bumper is direct to the captive nut positions.
Q: What happens if the splitter tip contacts a kerb at speed?
A: The reinforced 4 mm-radius carbon forward edge of the splitter resists glancing blows well. A direct strike at speed may delaminate the tip section — typically the outer 30–40 mm of one corner.
Q: Is the splitter compatible with the Stallone race flaps, or do they interfere with each other geometrically?
A: The splitter and the race flaps for the front bumper are designed to coexist — the race flaps mount at the bumper's lower outer corners above the splitter end-plate attachment line, and the two components share the same OEM-referenced captive-nut positions without geometric conflict. Running both together is the recommended configuration for track-day use.
For full programme detail visit Mansory Body Kit for Ferrari 812 Superfast Stallone. Contact WhatsApp +44 7488 818 747 or [email protected] to configure your order and confirm current lead times.
