Radical
From Ferrari to Lamborghini to McLaren, virtually every supercar manufacturer makes a hardcore track-oriented model. But the Radical SR10 is something different—a turnkey race car that can post lap times close to those of a Le Mans prototype and is eligible for entry in the company’s own racing series.
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The Radical SR10 uses a turbocharged 2.3-liter four-cylinder engine from Ford that’s been reworked to make 425 horsepower and 380 pound-feet of torque.
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Radical is based in England, but around two-thirds of its annual production comes to the United States. The SR10 sits above the motorcycle-engined SR1, SR3, and SR8 models in the company’s lineup.
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The SR10 is not street legal, but you can buy it from one of Radical’s eight U.S. dealers, and it is eligible for entry in the brand’s race series.
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The SR10 has been on sale since 2020, but changes for 2022 include improved cabin ergonomics, a retuned factory ECU, and the option of a Formula 1-style halo protection cage that wraps around the cockpit to guard against flying debris.
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Radical says around half of SR10 buyers will only use their cars for noncompetitive track events.
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Radical says the SR10 can blast to 60 mph in 2.4 seconds and go on to a top speed of 180 mph. On the basis of our experience, those figures sound almost pessimistic.
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The SR10’s EcoBoost engine and six-speed sequential transmission can both run for more than 40 hours between mechanical refreshes, which is generous by race-car standards.
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The EcoBoost four-banger gives the SR10 huge straight-line performance but doesn’t have much character beyond its capacity to produce both noise and violence.
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Like many racing cars the SR10’s clutch pedal is only used for starting and stopping. Once moving, shifting the sequential transmission is as simple as clicking one of the steering-wheel-mounted paddles.
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Radical says the SR10 is at least as quick as a GT3-spec racer around most circuits and can produce more than 2.0 g’s of lateral acceleration on its slick tires.
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