Lancer Evolution X is loaded with the very latest in automotive engineering technology, including the S-AWC (Super All Wheel Control) vehicle dynamics control system and the newly developed, power-efficient Twin Clutch SST (Sport Shift Transmission). Lancer Evolution X is a new-generation high-performance 4WD sedan that allows a new category of driver access to Mitsubishi's dynamic driving experience by underpinning speed with control, security and safety.
Lancer Evolution X is powered by a new turbocharged engine that adds a high-performance turbocharger to the 4B11-type 2.0-liter 4-cylinder 16-valve DOHC MIVEC unit used in the Galant Fortis. Developing more power over the full rev range, this engine generates more torque at 422 Nm / 43.0 kg-m)/3500 rpm and has better response than its 4G63 predecessor. The new engine is also lighter and returns better environmental performance.
The GSR is available with the new Twin Clutch SST 6-speed automated manual transmission that eliminates the need for a clutch pedal and provides slick, smooth shifting. Twin Clutch SST puts odd (1st, 3rd, 5th) and even (2nd, 4th and 6th) gears on separate input shafts each with its own clutch and, through tight cooperative control with the engine, switches between these clutches to realize seamless and lightning-fast shifting for feel-good acceleration. Because it uses clutches rather than a torque converter to transmit power, Twin Clutch SST allows superior power transmission efficiency with little loss of motive power and returns excellent fuel economy.
Source: Mitsubishi Press Release