Air splitter for front fender Mansory for Ferrari 812 Superfast Stallone
Air Splitter for Front Fender Mansory Carbon for Ferrari 812 Superfast Stallone
The Mansory air splitter for front fender is a precision carbon channel that bolts to the brake-duct aperture of the Stallone widened front fender, directing ambient airflow toward the Ferrari 812 Superfast's Brembo front brake disc assembly. While the widebody fender creates the duct opening, this splitter provides the shaped interior geometry that converts an open slot into a focused cooling duct — an engineering addition rather than a styling accent. It is listed individually within the Mansory Body Kit for Ferrari 812 Superfast Stallone for owners who are fitting or upgrading fenders on a track-oriented 812 Superfast and require maximum brake-duct performance from the Stallone architecture. The 812 Superfast's naturally aspirated 6.5L V12 delivers 789 hp to the rear wheels and revs freely to an 8,500 rpm redline, meaning approach speeds before braking zones on circuit are substantial and the thermal demand on the front Brembo caliper assembly is among the highest of any Ferrari GT road car.
Construction & Materials
The duct splitter is a compact, high-precision piece requiring a two-part clamshell mould with smooth interior surfaces to minimise duct-wall friction losses. Autoclave-cured pre-preg carbon at 2K plain weave is used throughout — 2K plain provides a tighter surface texture than 3K twill, which reduces flow turbulence on the internal duct walls and is consistent with functional aerodynamic applications. External visible surfaces use 3K twill for aesthetic coherence with the adjacent front fender weave pattern. Dimensional accuracy is critical on this part: the outlet aperture must be positioned within ±1 mm of the caliper inlet centreline for optimal cooling efficiency, and Mansory verifies this at the mould-build stage using the Ferrari 812 Superfast suspension geometry as the reference datum.
- Weave: 3K twill (external), 2K plain (duct interior)
- Cure: autoclave at 120 °C / 6 bar
- Wall thickness: 1.8–2.2 mm (thin for minimal duct blockage)
- Weight: approx. 0.28 kg per unit
- Mounting: 4 × M6 stainless bolts into the front fender aperture flange
- Finish: high-gloss clear lacquer on external faces; smooth resin-coat on internal duct walls
- Supplied as a single piece (one side); order two for a left-right pair
- Outlet aperture: 38 × 28 mm aligned to Brembo front caliper inlet
Design & Visual Function
Brake disc temperatures on the naturally aspirated 812 Superfast's 6.5L V12 platform can reach 700–800 °C during repeated heavy braking from high speed — a consequence of the 789 hp available through the atmospheric V12's throttle response and the 1,525 kg kerb weight of the coupe. The air splitter's duct geometry accelerates the incoming boundary-layer air by reducing the duct cross-section from the fender slot width (60 × 35 mm) toward the caliper-inlet diameter (38 × 28 mm), applying a venturi-like pressure differential that actively draws cool air against the disc face even at relatively low vehicle speeds during urban circuit sections.
Externally, the splitter presents a narrow carbon lip below the fender arch line, visible only on close inspection. It integrates seamlessly with the Stallone fender's arch profile — the mounting flanges are recessed behind the arch lip so the duct entrance reads as an intentional design element rather than a retrofit. Owners who specify carbon fenders with the matching air splitter achieve a level of detail in the wheel arch area that distinguishes their Stallone build from cars fitted with fenders alone.
The smooth resin-coat interior ensures that any stone or dust particle entering the duct is not caught on surface irregularities; it passes through or is deflected away from the disc face rather than accumulating within the duct body. This smooth-bore specification mirrors the approach used by GT endurance race teams on long-haul circuits where repeated-lap brake temperatures are a primary reliability factor across the full race distance.
Compatibility & Fitment
The air splitter is designed to bolt into the brake-duct aperture of the Mansory widened front fenders for the Ferrari 812 Superfast (F140-platform, naturally aspirated V12, RWD, 2017–2022). It is not compatible with the OEM Ferrari 812 Superfast fender, which does not have the corresponding aperture geometry. LHD and RHD vehicles are aerodynamically symmetric at the front brake position — left and right splitters are mirror-image pieces. If ordering fenders and splitters simultaneously, specify mirrored-pair production to ensure weave batch and geometry consistency across all four front-end pieces.
Installation & Reversibility
Installation requires the front fender to be either already fitted on the car or removed for bench work, as access to the inner arch is needed. The splitter locates into the fender aperture from inside the wheel arch, aligning four M6 bolt holes with the pre-threaded stainless inserts moulded into the fender aperture flange. Torque to 6 N·m — do not overtighten into carbon thread inserts, which can crack under excessive load. Fitting time is approximately 20–30 minutes per side on a vehicle with the fender already installed, or 10 minutes on a bench. Fully reversible — the four M6 bolts can be removed without specialist tools beyond a 10 mm socket driver.
Pairing within the Mansory 812 Superfast Stallone programme
This part is designed as a direct companion to the front fenders, which provide the duct aperture it occupies. For a complete front-end aero and cooling system, pair with the full front kit which reshapes the bumper lip and lower apron for improved front-axle cooling airflow. The race flaps for front bumper complement the brake-cooling strategy by reducing underbody turbulence that would otherwise compete with the duct inlet pressure differential at the arch aperture.
Maintenance & Durability
The air splitter's interior duct surfaces should be inspected after each track day and blown out with compressed air to remove any accumulated stone dust or brake pad debris. The exterior lacquered faces are exposed to wheel-arch wash — clean with the same pH-neutral shampoo used on the fenders, and apply ceramic coat at the same intervals. The M6 mounting bolts should be checked for torque retention annually; thermal cycling from disc heat transmitted through the wheel arch air can gradually relax composite thread inserts over the course of a full season's track use. Avoid direct high-pressure washing at the duct inlet, which can force water into the disc and caliper area and cause seal degradation over repeated washdown cycles. Lacquer life 8–12 years with routine ceramic maintenance.
Lead Time & Warranty
As a small precision component, the air splitter is typically available in 2–3 weeks. Ordering simultaneously with the front fenders is recommended to ensure weave-batch consistency and matching lacquer sheen between the two parts. Covered by Mansory's 12-month warranty against manufacturing defects including duct geometry deviation and bracket delamination under normal road use.
FAQ
Q: Is this piece required if I am only using the car on public roads?
A: Not strictly required for road-only use — the open fender aperture alone provides passive brake cooling. The splitter maximises cooling efficiency and is most beneficial for track-day users or owners in hot climates where repeated braking cycles on mountain passes create sustained caliper temperatures.
Q: Will adding this splitter affect my Ferrari warranty on the brake system?
A: The splitter directs ambient air toward the existing OEM Brembo assembly without modifying any component. It is a passive cooling addition. Whether it affects your specific Ferrari warranty depends on your authorised dealer's interpretation — consult before fitting on a warranty-active car.
Q: Do I need one unit or two?
A: Two — the air splitter is a single-side piece. Order a quantity of two for the front-left and front-right positions, and specify that you need a mirror pair when ordering to ensure correct geometry orientation for both sides.
Q: What temperature range is the internal resin rated to within the duct?
A: The interior resin matrix is rated to 180 °C continuous, well above the ambient air temperature inside the duct, which typically reaches 40–60 °C even in full-load track use. Disc radiant heat toward the duct exit is managed by the OEM caliper heat shield and does not bring the carbon body to critical temperature.
Q: Can I fit this to a non-Mansory front fender with a custom aperture?
A: Only if that fender has an aperture dimensioned to match the Mansory bracket geometry (60 × 35 mm inlet, 4 × M6 on 80 × 60 mm bolt circle). A custom adapter bracket can be fabricated, but this falls outside the scope of the standard product warranty and requires dimensional verification.
Add precision brake-duct performance to your Stallone front fenders — enquire about a paired fender-plus-splitter order. WhatsApp +44 7488 818 747 or [email protected].
