Radical’s popular track-only SR3 has been given some significant upgrades for 2023 -
has revealed a new iteration of its SR3 called the XXR. Closely based on the existing model, the new XXR features lots of new content under the skin, including extensive upgrades to its powertrain and brake package.
Located behind the driver is a new 5th generation of Radical’s own 1500cc RPE engine, which is now rated at 232bhp – 6bhp more than the existing 1500cc engine found in the previous SP3. Changes to this next generation unit include the addition of forged connecting rods, lighter crank pins and a new ignition system, while the heads have improved flow rates.
The six-speed sequential transmission has been reinforced, and both gearbox and engine have received all-new calibrations, giving the engine the ability to now run on E85 biofuel - which is 85 per cent ethanol.The SP3 XXR also features a brand new braking system, with Radical partnering with AP Racing for both the discs and calipers. These are set behind a new design of lightweight forged wheel and together they further reduce unsprung weight.
Radical is currently one of the market leaders in the production of high performance track-only cars, having sold 1500 SP3 units for global competition and track day usage. This new model should only bolster the appeal of the SP3 range when it goes into production from February next year.
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