2008 450 ATV Sport Shootout

Yamaha YFZ450
With a huge change in the 2004 AMA regulations stating that pro racers must compete with current factory engines and frames, Yamaha could not have picked a better and more promising time to release the YFZ450. This was a crucial moment for our sport as custom-built machines that were too costly for the average enthusiast were quickly being replaced by phenomenal factory rides. This created a fierce competition in the industry with the primary beneficiary being the consumer. By being the first to enter this market, Yamaha happily set the standard for what today has become the largest and most competitive class of ATVs to date.

The aggressive stature of the YFZ is visually intimidating and shouldn't be taken lightly. At the heart of this beast you'll find a fast-revving and hard-hitting powerplant that's as reliable as it is powerful. Lugging a high gear isn't where the YFZ's power delivery gained its monstrous reputation. Being pushed hard is where machine comes alive roaring through the gears and devouring everything in its path. Gearing is well-suited for technical riding, and as the trail opens, the YFZ likes to stretch its legs revealing its untamed nature.

The throttle's position and throw were reported by a majority of our testers as being difficult and strenuous. Over a short period of time this design caused arm-pump followed by a reduction in the rider's pace. Whether you're cruising around or crouched in the attack position the remaining controls perform with ease just as you would expect of those engineered for a race-inspired machine.

Suspension on the YFZ is well-rounded and performs well at all speeds. The rear does sit a little high but lacks the sometimes-tipsy tendencies of taller machines. On the trail maintaining control in rough conditions can be a rigorous task on any quad, but for stock suspension the Yamaha does a really good job at securely retaining its foothold. The woods aren't typically as demanding of suspension as the MX track, but an occasional obstruction can be spine crushing. When faced with these circumstances the YFZ fares well, providing the rider with adequate control to maintain composure. Performance on the MX track is superb. Soaking up braking pumps and taming rough landings can be accomplished with ease. The ability to perform well in both environments says a lot on behalf of the YFZ, making it a versatile machine for the rider who never knows where the next ride may take them.