Hardcore motorsport fans are no doubt familiar with Radical Sportscars, makers of the legendary longtime Nordschleife record-holding SR8. But the firm also makes a range of cars for the track-day enthusiast, including one of its most popular, the SR3.

Now Radical has announced the new SR3 SL, a track day and road-legal roadster that spearheads the firm’s 2011 product lineup. The SR3 SL will be formally unveiled at the 2011 Autosport International Show in Birmingham, UK next month ahead of a sales launch shortly after.

Described as Radical’s “most advanced” sports car ever, the new SR3 SL will come with a 2.0-liter Ford ST engine tuned to around 300 horsepower. Drive is sent to the rear wheels via a six-speed sequential gearbox fitted with F1-style paddle shifters for gear changes,an  auto-blipper for the throttle and an advanced engine management system. The best news is that the entire thing will weigh just 1,488 pounds.

Also on show will be the track-only SR3 RS that we reported on earlier, as well as the updated SR8 RX, which debuts a new 2.7 RPX V-8 engine.

Interestingly, one of Radical’s closest rivals, Caterham, will also be using the upcoming Autosport International event to debut its own new model.

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