The Elise's incredible handling is made possible by a bonded extruded aluminum chassis, four-wheel-independent suspension, Eibach coil springs, Bilstein gas shock absorbers, AP Racing/Brembo brakes, multi-spoke alloy wheels, and Yokohama performance tires. The Elise R is powered by a tuned 189-horsepower 1.8-liter four-cylinder engine with a six-speed manual transmission. The SC and SC Roger Becker Edition use the same 1.8-liter four-cylinder, but a supercharger boosts output to 217 horsepower. The available Touring Pack includes an insulated soft top, full leather seats, upgraded stereo system with iPod connector, stowage net, additional sound Insulation and full carpet set. The optional Sport Pack provides lightweight forged alloy wheels, sport tuned suspension, twin oil coolers, traction control and ProBax sport seats. A limited-slip differential is also available. The SC Roger Becker Edition features the Touring Pack, Sport Pack and limited-slip differential as standard equipment. For 2011, the Lotus Elise features a new, evolutionary body design incorporating a new front clamshell, rear bumper, engine cover, all-in-one integrated headlights with LED day light running lights and LED direction indicators, and new wheel designs. The SC Roger Becker Edition is a limited edition built to honor the longtime director of Lotus vehicle engineering.