2004 Yamaha YFZ450, Yamaha has taken the lead in 4-stroke quad technology by unleashing the YFZ450, the first truly competition-oriented 4-stroke ATV from a major manufacturer.From the bottom up, the YFZ s dry-sump motor is a WR/YZ hybrid re-engineered specifically for the demands of quad life. To make the YFZ legal for the ATVA s Pro-class series that has a displacement limit of 440cc.Up top, the water-cooled engine features the same five-valve design as the bikes, but with a bit less compression (11.9:1 versus 12.5:1) and a lower rev limit (10,750 rpm versus 11,250 rpm). To generate a combination of screaming top-end and prodigious torque, the titanium valves (the first-ever quad so equipped) are activated by a YZ intake cam and a WR exhaust cam. Fresh air is ingested by a huge foam-type filter in a sealed airbox through to the bikes 39mm, throttle-position-sensor-equipped Keihin flat-slide carb, the very one used by most 4-stroke ATV motor builders for years. The tires are in great shape, it is ready to ride!!! Each quad goes through rigorous inspection, cleaning and examination before we feel comfortable considering it a part of our inventory and available for sale. Once we are through with our thorough inspections and cleanings and the bike has been approved for sale, we photograph it from all angles. The picture views assure to our clients that the bike is in good condition and there are no flaws to hide, which is important to both us and to our online buyers. Be sure to check out brennys dot com!!
