Porsche Rally Racing Proto D4S 

Saturday, 29, April, 2023 – Porsche Experience Circuit Franciacorta (BS) – Italy 

Let’s discover a unique Porsche in the World: the incredible Rally Ice Racing Prototype built by D4S to attack the Ice Series Championships in 2012 against monsters prototypes directly arriving from the worldwide famous French Trophée Andros.


The car, built during the 2010 and 2011 from the concept design of Dr. Eng Sergio Durante and the teams of engineers, like Dr. Eng. Mauro Comoglio expert in manufacturing technologies and Dr. Eng. Anja Praturlon FIA delegate, was exhibited as a technology demonstrator at the Kohl Motorsport Fair (Cologne, DE) in 2011 with the livery sponsored by Concurrent Engineering, HAAS and K&N 

The car took part in international championships on Rally on Ice from 2012 to 2013 such as the Ice Series and Ice Challenge finishing in fourth place overall agains prototype cars from the Andros Ice Racing Championship. It also took part in uphill races such as the Cesana-Sestriere taking first place in the prototype category. In 2014-2018 the car participated in the Ronde Invernale in France on Ice and the Winter Sprint race at the famous historical circuit of Serre Chevalier, always catching excellent results including two pole position, two success overall and the circuit record.

Since 2019 the car has been resting in the garage of a collector, sometimes performing some exit on circuit like today in the beautiful brand new Porsche Experience Circuit of Franciacorta in Brescia.


Car built entirely by D4S Motorsport with rollbar welded according to safety FIA standards and rules, Sparco seats and Sabelt six-point racing belts, approved by FIA racing fire extinguisher, internal-external racing battery switch. Bodywork totally lightened and reinforced in the stress areas. Doors in

Full Carbon Kevlar, Front hood in Full Carbon Kevlar, Engine hood in Full Carbon with fully tunable aerodynamic rear wing in Full Carbon and supports in Metal Matrix Composites (Al +20%SiC), Spoiler in Full Aerospace Carbon custom made by TEKS Aerospace, Bumpers in Carbon Kevlar reinforcement , Total body protection in Carbon Wrap.

Lightened interior with Full Carbon protections of electrical and electronic panel, gearbox and central console. Aluminum pedal board.

Engine: mounted on rigid supports in aeronautical aluminum with local reinforcements in titanium, lightened flywheel and reinforced clutch, D4S Motorsport preparation on intake and full exhaust, with 2 3 into 1 and X-pipes, for incredible low rpm to max rpm push. Sounds like F1 engine.

Racing gearbox and front and rear differentials with adjustable ramps made of super-finished highly alloyed steel and coated with PVD and CVD technology in Diamond Like Carbon and Titanium Nitride and Aluminum with Nanocomposite structure.

Custom suspension made with adjustable camber plates and Biltein custom dampers and coils, with quick adjustment of damping and ride height

Vehicle certified characteristics

Hybrid bodywork in carbon fibre, aluminium, steel, Kevlar fibre, titanium

Crystals and windshield in super light Lexan, anti-reflection coating, water repellent coating, Porsche multilayer glass windshield

Internal conditions Alcantara, aluminium, carbon fibre, bucket seats, six-point belts, high-strength steel rollbar, reinforcements.

Tyres: 4 sets of tires and rims: slick, rain, snow and ice racing studded, various sizes from 16 to 18″ Those fitted with slicks, Michelin 18″ sizes, 19″ rain, 16″ ice racing. The rims are original Porsche 5-spoke aluminum equilibrated.

Also original Porsche wheels are mounted on the slick tyres.

Engine: Prepared engine, direct intake, tuned exhaust, variable valve timing, lightened flywheel, reinforced clutch, rigid mounts;

Cooling system, radiator: Forced ventilation aluminum radiators

Injection and electronic ignition, configured for 98-100 octane petrol or special fuel up to 120 Octane

Handcrafted exhaust system tuned 2 x 3in1, X-pipe, direct

Double electric racing fuel pump, with cell racing tank

The gearboxes are all manual and beautifully lightened crafted in high strength steel, super finisheded and diamond DLC coated and other nanostrucured coatings.

Braking system with aeronautical tubes, (with the overheating of the oil, air bubbles are formed in the oil, with this equipment the heating and expansion of the tubes are reinforced in order to avoid loose of internal pressure, permitting long session at the maximum attack on the circuit), built ad hoc and customized just for this car, disengageable ABS, self-ventilating discs, racing pads.

Steering gear with Porsche power steering

Porsche power steering pump

Competition shock absorbers and suspension, Bilstein custom adjustable in

compression and rebound, adjustable height, mechanically adjustable

Porsche-D4S hybrid general electrical system