The SR8 is a truly exhilarating drive, powered by a bespoke Radical V8 engine with physics-defying grip, relentless acceleration and powerful brakes
The SR8 is a more extreme version intended for track use but can be registered for the road. The SR8 also features one of the largest engines Radical has ever put in their cars, with the 2700 cc RPE RPX V8 constructed by combining elements of Suzuki inline-4s, and producing 430 horsepower (321 kW). A further variant, known as the SR8LM, increased the engine to 2800 cc and brought power output to 455 hp (339 kW). In August 2009 Michael Vergers, driving an SR8LM, set the new lap record (6 minutes, 48 seconds) for a road legal production car at the Nürburgring Nordschleife circuit. This record was beaten by the 991 generation Porsche 911 GT2 in September 2017 with a time of 6:47.25.
The SR8 has the most impressive specifications of any Radical model, bar the RXC Turbo, Turbo 500 and the race cars. It is capable of 0–60 in 2.7 seconds, 178 miles per hour, and a 2.5 g's of lateral acceleration.
What is cool about the video is I have witnessed sitting shotgun in an 01 DC2-R JRSC K20a2 with IPS SC cams hitting the same mph on the back straight at the same track with a 200lb passenger. That certainly says something about Honda engines and what they are capable of FI.