Why a new RS model?
With three decades of highly successful sales and performance accomplishments with our previous models, it was time to put everything we have learnt into the new Ultima RS flagship model. The new RS has market-leading levels of downforce via revised aero systems, perfected in the MIRA wind tunnel. Every design facet of the restyled Ultima RS panels results in an increase in performance envelope capability compared to previous generation Ultima models. Performance aside, the Ultima RS is a vastly improved and modernized supercar, with even greater levels of style, fit, finish, quality, safety, driver comfort, sophistication, usability, practicality and handling finesse.
The Ultima RS model is the most thorough and complete overhaul of the road legal Ultima ever to be released, with thousands of enhancement changes to specification.
The RS is a real milestone in our company's development. The result is truly remarkable – a car that is devoid of restraint and an improvement in almost every area.
What is the performance of the Ultima RS?
The Ultima RS has the overall performance parameter capability to surpass all world beating track times and performance statistics set by the previous generation Ultima cars.
Acceleration of 0-60mph in 2.3secs with a top speed capability of over 250mph being possible with the appropriate new LT5 drivetrain power output choice.
How are the aerodynamics improved on the Ultima RS model?
The design brief for the Ultima RS aerodynamics was to improve high speed stability whilst reducing the co-efficient of drag to achieve a more aerodynamically efficient car, resulting in market leading levels of downforce. Minimum co-efficient of drag achieved in the MIRA wind tunnel was 0.304 with the ability to adjust downforce to a maximum of over 1000kgs.
The front splitter has been engineered to mount directly to the chassis, thereby removing any flexibility and putting loads direct into the chassis. The optional carbon fibre version also incorporates diffuser ramps to the underside to increase downforce while minimising the co-efficient of drag. The integral vortex generators on the outside points help to control wake around turbulent air from the front wheels, at the same time giving smooth flow to the underside of front dive planes (if fitted). The carbon fibre front dive planes can be used to move the aero centre of pressure further forward and produce more downforce on the front axle. The only downside with using dive planes is that they will increase the co-efficient of drag.
The re-design of the front body has reduced the frontal area to a minimum and also adds a lower co-efficient of drag. At the same time it controls air flow over the leading edge and maintains a boundary layer over most surfaces. Now that the radiator has a totally uninterrupted flow of air it has improved cooling efficiency.
We designed an integral S Duct system for the front canopy. To control airflow at high velocity the entry into the radiator will generate a stagnation zone between high pressure and low pressure; this backs up in front of the radiator as speed increases and will bleed off through new slots in the front body stiffener moulding and exit on the top surface of the front body. This also helps with an additional small amount of downforce on the front axle while maintaining low co-efficient of drag. If air passes too fast through the radiator core you generate a boundary layer so the heat from the radiator cannot attach itself to air passing through.
The RS carbon fibre side splitters work in a similar way to the RS front splitter in that they separate airflow most importantly when the car is in yaw with medium and high speed cornering, this in turn will increase downforce on loaded tyres and prevent air rolling underneath the side pod and creating lift.
Front and rear wheel arch vents (available in body coloured gel coat or an exposed carbon fibre finish) generate downforce and reduce drag. Rear vents have the added bonus of allowing hot air to exit from the exhaust headers. The new RS carbon fibre side pod scoops come with integral NACA ducts and provide air flow for the air conditioning condenser and to the new LT engine air intake system.
The RS radiator exit divider is used to initiate air separation around the wiper arm and then further up the windscreen. The wake is used to divert the boundary layer either side of the roof scoop intake. This minimises hot air from the radiator entering the roof intake.
In full size wind tunnel testing we recorded an identical co-efficient of drag with side pod apertures completely blanked off versus side pod scoops fitted. This is due to having a very efficient exit point in the new RS rear wheel arch louvre vents. This resulted in additional down force and the centre of pressure to the rear axle increased.
New optional RS carbon fibre rear view mirrors have been moved to the front bulkhead area on the centre section to minimise disruption of the boundary layer over the top surfaces and improve airflow onto the rear wing.
To improve the efficiency of the RS rear wing it is now larger and the full width of the body. It is mounted on a new bespoke swan neck mounting system which transfers downforce directly to the chassis. The new swan neck mounting system has been engineered to increase downforce and reduce coefficient of drag, minimising wake to the bottom surface of the rear wing.
The addition of a new roof scoop has been used to improve air flow over the top of the car and maintain a boundary layer over the top surface. It also uses the intake air flow to assist in engine bay cooling.
The RS carbon fibre rear diffuser is a design feature added to enhance the appearance of the car whilst improving air separation off the rear canopy.
What are the engine fitment options for the new Ultima RS?
The engine options are the LS range of Chevrolet V8 engines (LS3/LS7/LSA) and also the latest generation Euro 6 compliant LT range of direct fuel injection Chevrolet V8 engines (LT1/LT4/LT5). The fantastic new LT range of dry sump, emission friendly and supremely powerful Ultima engine options further increases the number of countries we can export the Ultima RS into. We have developed an all new Ultima plug and play factory LT engine installation package specifically for the Ultima RS model to comply with the latest worldwide regulations.
Even with a base LS3 crate engine at 430bhp, the lightweight mid-engine Ultima RS can propel itself to 0-60mph in 3.3 secs and over 180mph. More than enough for some serious fun!
We will not sell the Ultima RS supercar to any individuals who seek to install a different type of engine, to protect and safeguard our brand identity, purity and engineering excellence of our marque. The Ultima RS is comprehensively designed and engineered around the Chevrolet LS and LT engine installation, with a no compromise approach.
Where do I buy the engine from?
To coincide with the new Ultima RS public release we now sell all of the Ultima engine packages directly from ourselves at Ultima Sports Ltd and can quote for full engine packages for all of our clients. We no longer use American Speed in the USA as our recommended engine supplier now that the new LT GM crate motors possess this magnitude of immense and reliable power output as standard. Our standard LT5 crate engine fitment makes over 800bhp in our Ultima application!
The engine is one of the last items that a client needs to purchase and install once the rest of your Ultima RS build is largely finished.
The Chevrolet LS3, LS7 and LSA GM crate engine specifications are available to view at these three links:
The Ultima RS model is also engineered to accept the latest generation of new direct fuel injection dry sump Chevrolet LT1, LT4 and LT5 GM crate engines, the specifications are available to view at these three links:
Customers are welcome to tune or upgrade their GM Chevrolet V8 crate engines themselves using an engine builder or tuner of their choice to any power levels that they desire. The engines are extremely tuneable to power levels in excess of 1200bhp for the new LT5 option - if you are feeling brave enough! The Ultima RS can handle it, can you?
Do you sell the new Ultima RS to my country?
Absolutely yes! We sell and ship worldwide from our UK factory. We don’t use any dealers or distributors as we prefer to deal directly with our customers. This allows us to offer the best possible pricing and factory support. We have already sold the Ultima into over 65 different countries and we won't be content until every country contains an Ultima!
Is the Ultima RS road legal?
Yes, we have gone to great lengths to design the new Ultima RS in a manner for it to be deemed road legal in many countries, which is a hugely time-consuming and skilled task compared to simply manufacturing a track-only car. The beauty and ethos of the Ultima is that it can be enjoyed immensely on the public roads at sensible road speeds as well as on a race circuit where it can deliver devastatingly quick lap times. Driving an Ultima RS on the public roads is a wonderful event and is the kind of experience every true car enthusiast should savour and enjoy.
The Ultima RS does make a superb track day only car too, for those clients who prefer to dedicate their driving passion solely to the track.
Is the Ultima RS available in LHD and RHD?
Are the Ultima EVO Coupe and Ultima EVO Convertible models still available?
The sensational and timeless Ultima EVO Coupe and Ultima EVO Convertible will always be available and certainly won’t be withdrawn from production. The new Ultima RS is our halo model which is now the third model in our range and is intended to compliment the EVO model.
Will there ever be a Convertible version of the Ultima RS?
No, the Ultima RS model is only available in Coupe hard top format.
Are all the new RS body panels available in an immaculate gel coat?
Yes, we have expertly manufactured a comprehensive range of new body moulds for the Ultima RS model which are of a sensational quality to enable us to offer the body panels in an immaculate market leading gel coat finish, negating the need for clients to invest in an expensive and time-consuming paint finish.
The RS demo car pictured conveys our beautiful white gel coat finish.
There are 14 different gel coat body colour choices.
Which items are available in carbon fibre?
Many of the new optional RS aero features we have developed, such as the front splitter with integral vortex generators, front dive planes, front brake ducts, side splitters with integral vortex generators, side scoops, wheel arch top vents, centre section mounted rear view mirrors, rear diffuser and new full car width swan neck top mounted rear wing system are all available in a stunning lightweight carbon fibre finish as pictured on the new Ultima RS demo car.
Other new carbon fibre panels include the cockpit side sills, luggage compartment covers, headlight clusters, fuse box access panel covers and an AIM MXS digital dashboard shroud.
Is there a PDK option?
No, the Ultima RS is a real driver’s car and therefore is only available with a six speed manual shift gearbox and a clutch pedal.
The PDK system seen on many cars nowadays is not in keeping with the ethos of an Ultima, which was primarily designed to maximize driver engagement and to provide an old school Le Mans inspired thrill like no other road going sports car in the world. We aren’t interested in the dulled down mass market driving experience and therefore the Ultima RS will always be a manual shift supercar to cater for those true driving enthusiasts who appreciate and indeed crave this philosophy.
Will there be another new Ultima model in the future to replace the RS?
No, our vision is that the new Ultima RS is a timeless Group C Le Mans inspired masterpiece with a uniquely modern twist that will flourish and prosper for decades into the future like previous generation Ultima models have. You can order the new Ultima RS model safe in the knowledge that it will not be superseded in the same way that other new supercars often are from other manufacturers.
What is the lead-time for an Ultima RS?
The lead-time is currently 22 weeks for a self-assembly comprehensive package.
The lead-time is currently over 2 years for a factory-built turnkey vehicle due to strong Ultima demand.
What is the procedure for ordering an Ultima RS?
Simply email the factory directly at firstname.lastname@example.org to discuss the specification for your Ultima RS. The factory will then prepare a quotation listing the parts that will be required to assemble your new supercar.
We ask for a 25% deposit to confirm your order.
A second 25% instalment is due after 6 weeks when you firm up your options choices. The remaining 50% to be paid once the parts are packed and ready for shipping.
During the period between placing your order and being ready for delivery we will keep you up to date with progress via e-mail, including jpeg images of the parts as they are prepared.
What price range is the Ultima RS?
You can build your own new Ultima RS supercar from our tailored self-assembly package of parts for around the same ballpark price as a mundane new BMW M3, depending on options selected.
Turnkey Ultima RS cars can be factory built to special order.
Please contact our team for a prompt quotation at: email@example.com