۲۰۱۶ Yamaha YZ450F – LONG-TERM TEST We fine-tune Yamaha’s 450cc thumper and make great, better. As a whole, we’ve left our YZ450F remarkably stock and had little issues with performance or durability. Testing motorcycles takes time. Sure, a day at the track can give you an idea of a bike’s performance, but a long-term shakedown […]