The Supersport has always been one of Caterhams best models. The original version of the Supersport featured a 1.6l Rover K-Series engine, fitted with high lift cams, an ECU remap to produce 135bhp, along with a lightened flywheel and a shortened 3.9 ratio limited slip differential (LSD). The combined effect of these significantly improve the overall driving experience from the standard Roadsport, increasing the power output by 15-20bhp whilst also intensifying the throttle response and gear changes thanks to the lightened flywheel. The LSD adds bags to the character, promoting but under and over-steer in equal measure. The reduced final drive ratio pulls the gears closer together, aiding acceleration and in truth far better suit the characteristics of the Caterham.
Other specifications found as standard on original Supersports include; adjustable platform suspension, wide-track front wishbones a single change up light behind the steering wheel.
It is quite common for Roadsports to be upgraded to Supersport specification, but more often then not this is simply done by upgrading the engine. Whilst this will still largely improve performance and character of a Roadsport, the difference is very noticeable without the extras which make up the full Supersport specification.
Many Supersports are derived from racing Caterhams. The Caterham Academy is among the most successful beginners racing series in the world, and produce 56 new Roadsport spec Caterhams per year, compared to around 20-30 new Supersports.
The way the ladder of progression works in the Caterham Champoinships, by year three many of these Academy cars are upgraded to a specification closely resembling the Supersport, and by year four are dead ringers. Due to the immensely diverse nature of the Caterham, many of these cars are retired from racing after many years and rebuilt into road spec cars. More often than not, cars like these turn out to be among the best used Caterhams you can buy. Whilst they may appear slightly dishevelled after their time on track, they are usually maintained to a significantly higher standard than road cars as well as being properly set up.