NEW: Radical introduces SR3 XXR and SR10 XXR
Radical Motorsport unveiled its new upgraded SR3 at the end of 2022; now the SR10 XXR follows suit. Learn more about both new models below:
RADICAL SR3 XXR:
New Radical SR3 XXR launched with more power and precision
Latest Radical Motorsport SR3 XXR improves on the legendary SR3 formula with new power and precision, to enable drivers to lap faster, harder and for longer
First model to be fitted with Radical Performance Engines’ Generation 5, biofuel-ready, 232 bhp engine as well as brakes from new technical partner, AP Racing
Available to order now with first deliveries in Autumn 2023
Radical Motorsport has unveiled the full specification of its all-new SR3 XXR. Enhancing the proven formula of the SR3, the UK-based motorsport firm has focused on performance, usability and durability while retaining the essence of what makes the SR3 the most successful prototype-style sports racing car in the world.
Powering the major change is the all-new engine from in-house Radical Performance Engines (RPE). Delivering 232 bhp from the revised 1500 cc unit, the lightweight SR3 XXR is expected to maintain its impressive power-to-weight ratio exceeding 350 hp per tonne. With the ability to run on biofuel from day one, the use of the Generation 5 engine also makes the SR3 XXR the first Radical that can run on biofuel.
Delivering on customer feedback, the SR3 XXR has been modified to be more agile on track, especially in crucial pit lane stages in which saving time, while not being penalised for speeding, is pivotal. With a new pit limiter fitted as standard, the chance of being punished for speeding through the pit lane is eliminated. The LMP-inspired central tail ‘shark fin’ delivers notable aerodynamic improvement to entry and mid corner stability. The SR3 XXR is also clearly differentiated by its lightweight wheels in a new design alongside high-intensity DRL lights. A carbon fibre splitter and rear diffuser will be offered as an option to improve durability and aerodynamics on track.
With the increased performance, the engineers at Radical Motorsport have utilised the new technical partnership for the SR3 XXR with AP Racing, to make an upgraded braking system available. The new solution has improved performance through a reduction in unsprung mass and improved pedal feel.
James Pinkerton, Radical Motorsport Head of Research and Development and double Radical Cup UK Champion, said: “The SR3’s handling is renowned as a masterpiece so for [SR3] XXR we took the approach of evolutionary improvements across multiple areas. We looked at customer feedback as well as a list of items we’d personally like as racers. We then set about scrutinising every system on the vehicle to see where improvements could be made, whilst staying true to the SR3 formula. We’ve carried over the sidepod profile from the SR10 to improve airflow and reduce turbulent drag, and of course the new Generation 5 RPE engine is undoubtedly the star of the show.”
Despite already being at the core of what makes the SR3 so successful, there are a number of further improvements to the SR3 XXR’s powertrain. Notable improvements include durability updates and external gear position sensors for the gearbox, a new scavenge pump design with improved flow for the oiling system and a fuel composition sensor that allows for the use of E85 Biofuels. There has also been a complete rework of the engine and gearbox calibration, as well as improvements to the flow rate and flow consistency of the cylinder head. Other improvements include a reduction in mass for the connecting rods, crankshaft pins and the ignition system. While these enhancements increase the peak power and torque outputs without compromising durability, the improvements can be felt from 6,500 rpm all the way to 10,000 rpm.
RADICAL SR10 XXR:
XXR update given to the SR10, Radical Motorsport’s fastest-selling model ever
SR10 XXR upgrades include advanced aerodynamic design, LMP-inspired ‘central fin’, lightweight alloy wheels and DRL lights as standard
Optional ‘XXR Evolution Pack’ upgrade available to existing SR10 customers
Available to order now with production starting in Autumn 2023
Proving to be the motorsport country club and track day car of choice, Radical Motorsport has placed over 100 SR10s with customers since the model’s introduction in 2020. The introduction of the SR10 XXR comes just one month after the latest model, the SR3 XXR, was released, aligning Radical’s two most popular race cars under the XXR banner.
The new SR10 XXR has the XXR line’s inspiration of design and engineering upgrades, mated to the SR10’s acclaimed, long-life 425 bhp turbocharged 2.3-litre unit by Radical Performance Engines. New front louvres assist with better aerodynamics at high speed, reduced understeer and improved cooling efficiency. Creating enhanced stability through corners and at speed, the SR10 XXR is also fitted with the popular LMP-inspired ‘central fin’ feature from the SR3 XXR, alongside new lightweight alloy wheels and high-intensity front DRL light clusters; all as standard. For drivers looking for even more weight reduction, a brand-new carbon splitter and diffuser package is available as a cost option.
Delivering on customer feedback, many of the new SR10 XXR updates will be made available to current SR10 owners in the form of a new ‘XXR Evolution Pack’. This will include the XXR’s improved aerodynamic upgrades on the front clam, as well as the new wheel design, optimised cooling and revised set-up, and the carbon fibre bodywork items as an option.
Joe Anwyll, Radical Motorsport CEO, said: “The SR10 range has continued to push the boundaries of modern engineering capabilities with the same pure Radical driving experience. Our fastest-selling model in our history, we’ve been working hard to cherry-pick the best XXR model line upgrades and adding them to our best-selling model, the SR10.”
Both SR10 XXR and SR10 models with the ‘XXR Evolution Pack’ will continue to be eligible in international Radical Cup championships within the ‘Platinum’ classes.
The updated SR10 XXR is available to order now.