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!!
2010 Yamaha YFZ450R, Real Bead Lock wheels!!! 2010 Yamaha YFZ450R 1 . This one has aftermarket bead lock wheels on it. it also has "Holeshot" type tires on it, ready for an off road ride!! Check out the bars, they are also aftermarket!! The prestigious ATV of the Year Award from ATV Sport Magazine. Best in Class from ATV/SxS Illustrated. Winner of shootout after shootout. The YFZ450R took em all in its first model year, right out of the starting gate. This is one amazing ATV!In ATV motocross, great power output doesn t mean much without superior handling. YFZ450R delivers! The stance of the YFZ450R is motocross ready. The weldless frame is designed from lightweight aluminum, with a tension-steel bottom frame that lets the engine sit lower for excellent mass centralization. Suspension components have more travel, carefully chosen for best performance, and the front shock bodies feature Kashima coating for even smoother operation.Fatigue can sometimes be a racer s worst competition. That s why the YFZ450R s designers made this ATV so comfortable. It boasts racer- friendly ergonomics with plenty of room to hang off in the corners, and the seat is padded just right to be more comfortable regardless of riding position. This 450cc engine uses titanium five-valve cylinder head technology, with a camshaft designed just for this machine to deliver abundant low to midrange torque for performance where you can really use it to take the lead while still maintaining a super strong top end to let you pull away from the pack.The YFZ450R incorporates Yamaha Fuel Injection for precise fuel delivery. With big 42mm Mikuni throttle body and 12-hole injector, this system provides exceptional atomization of the fuel for maximum power. The system also includes ISC (Idle Speed Control) for easy, reliable start-up and warming.This ATV is designed to make race prep easy. Body panels come off easily for service; there s no need to remove the battery or other components to get the fenders off. The aluminum frame is bolted together, rather than welded, for maximum durability. And the oil tank is integrated with the crankcase so it s easier to service the engine.Enigne:The fuel-injected 450cc engine has superb power characteristics. Power delivery is smooth and strong off the line with lots of low and mid range where you need it.The crankcase holds a crankshaft that s ready to handle the increased balance ratio, as well as a counterbalancer for superior vibration control. The crankcase also houses the oil tank, which helps toCamshafts are designed to maximize the torque available in the low and mid ranges.Fuel injection uses a 12-hole injector that provides exceptional atomization of the fuel for maximum combustion efficiency and power delivery. The system also uses a big, 42mm Mikuni throttle b
