2003 Honda Civic Si Concept

For the 2002 SEMA show, Honda unveiled the 2003 Civic Si Concept, which showcased the aftermarket versatility of the Si.

Powertrain/chassis modifications included a GReddy T518Z turbocharger with an integral wastgate, a prototype GReddy front-mounted intercooler kit with aluminum piping, a GReddy Airinx high-flow intake system, a GReddy e-manage engine control manager, a GReddy Profec E-01 electronic boost controller (with e-manage programmer), widened track, Factory Performance sport suspension, a center mounted high-flow exhaust system, and a four-piston Brembo brake system.

The exterior saw changes including a Rally-inspired body kit, 18-inch polished titanium-finish wheels, a carbon fiber grill, front intake and rear bumper diffuser, a black chrome-finish headlights and smoked taillights, high-mounted two-stage rear wing. For the interior, Honda included Mugen carbon fiber and Kevlar race seats covered in red Alcantera suede with 6-point racing harness, a sport 3-spoke steering wheel, aluminum pedals and shift knob, Mugen high performance LCD screen gauge package, center mounted information display.