Page 1 of 1 Using Honda performance specialist Mugen's vast array of aftermarket high-performance parts, King Motorsports (the sole authorized North American distributor for Mugen Co., Ltd) has created the ultimate street performance Civic Si that maximizes the potential throughout every corner of the vehicle. Making its world debut at SEMA, the King Motorsports/Mugen Civic Si has a K20 DC5R engine and 6-speed transmission with a limited slip differential. The modified engine produces 240-horsepower. Page 1 of 1