2013 Honda TRX400X, Lowest Price Ever! - Looking for a sport ATV that’s sure to put a smile on your face? You can’t beat the fast and friendly Honda TRX400X. Under its aggressive-looking bodywork beats the heart of a racer: a high-revving 397 cc RFVC four-valve engine that has torque and horsepower to spare. A no-fat chassis boasts a one-piece cast-aluminum swingarm for reduced weight and increased rigidity and premium Showa shocks control an impressive 9.1 in. (231 mm) of rear-axle travel and 8.2 in. (208 mm) up front. And the TRX400X has a practical side to it too with handy features such as standard reverse and electric start.