2006 Harley-Davidson FLSTFSE2 - Softail Fat Boy Screamin Eagle, RNI 2006 Harley-Davidson® Softail® Fat Boy® Screamin Eagle The Harley-Davidson® Custom Vehicle Operations (CVO) crew has infused the new 2006 limited-edition FLSTFSE2 Screamin Eagle Fat Boy® with rowdy performance and a lean, urban custom profile. Based on the popular Harley-Davidson® FLSTFI Fat Boy®, the Screamin Eagle Fat Boy® features a Screamin Eagle 103 Stroker Twin Cam engine tuned to crank out more than 100 ft. lbs. of torque, special custom colors with metal grind accents, and a new steel seat.