Browse through comprehensive Big Bear 400 4X4 IRS technical specifications which consists of detailed manufacturer standard equipment spec sheets of the engine performance, fuel economy ratings, steering and suspension setup, front and rear brakes, wheels and tires, transmission and gear. Find additional data about the 2012 Bigbear 400 4X4 IRS seats, bags and storage capacity, exterior paint and finish, fenders, lights, mounts, instrumentation, audio, convenience, and much more. Simply choose from the options below to view any of the 2012 Yamaha Bigbear 400 4X4 IRS specs.