Yz450f

YZ 450f

Back in 2010, Yamaha completely changed not only the look of its popular YZ450F, but the engineering of it as well, flipping the motor around, adding Electronic Fuel Injection, and updating the chassis and suspension. It was an exciting time to be a motocross fan. It had been a long time since a company stepped out of the norm and introduced a bike that for all intents and purposes had never been seen or thought of before.

Flash forward to 2013, and although it has seen a few refinements since, it’s by and large the same machine that was introduced in 2010. For 2013, Yamaha decided to take the route of less is more, only giving the bike a new white rear fender, bold new graphics, and black Yamaha-branded handlebars. But if you think about it, that’s not necessarily a bad thing. Throughout the course of our testing last year, we found it to be very durable, the motor very powerful, and with the right suspension adjustments, the bike handles well enough for most riders.

As we already mentioned, except for a white rear fender and BNGs the ’13 is the same bike as last year. The first thing we noticed upon firing up the bike was just how easy it starts. While there is a lot of compression, it’s not as hard to kick over as other 450s in the class and we found the bike usually fires up in only one or two kicks. Out on the track, the YZF produces excellent power. Our initial day of testing took place at Glen Helen complete with its infamously steep Mt. Saint Helens hill. Going up, the bike pulled exceptionally well, producing great power down low that continuing to pull up top. Of all the 450s we’ve ridden this year, the YZF is one of the fastest. As was the case for the previous years, though, was the fact that the bike produces a different exhaust note when you’re riding, due in large part to the airbox being in front of the rider. It’s not necessarily is a bad thing, just something you need to get used to when swinging a leg over the bike for the first time.

Engine
Type	449cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Bore x Stroke	97.0 x 60.8mm
Compression Ratio	12.5:1
Fuel Delivery	Yamaha Fuel Injection (YFI), Keihin® 44mm
Ignition	TCI
Transmission	Constant-mesh 5-speed; multiplate wet clutch
Final Drive	Chain Drive

Raptor 700

Raptor 700

The Yamaha Raptor 700R comes with boatloads of power, but its true appeal lies in the details, specifically all the elements that make this ATV quite a catch in its segment.

Aesthetically, the Raptor 700R is dressed to impress - and a whole lot more - with a new styling that pays true homage to the ATV’s menacing looks. Proudly assembled in the US, the Raptor 700R also has a hybrid steel aluminum frame and Controlled-Fill aluminum sub-frame and cast aluminum swing arm, all of which combine to produce a super strong structure to make the raptor 700R the lightest ATV in its class. Another bonus is a thick and comfortable seat provides great comfort to the rider, as does the adjustable suspension and the sport-tuned piggyback shocks that provide excellent ride-ability. Dual counterbalancers, electric starting, and reverse keep things nice and in order for the rider.

At the heart of the Raptor 700R is an engine that’s absolutely no joke, a 686cc engine that’s both light and strong, efficient and hard-hitting, quick-revving and performance enhancing. The engine can rev all the way to 9,000 rpm and, when combined with Yamaha’s very own YFI fuel injection system, is a powertrain that offers excellent engine performance in a wide range of conditions, elevations, and temperatures.

Then there’s the matter of handling, which the Raptor 700R draws from its YFZ inspired set-up. Thanks in large part to the ATV’s 9.1" of front travel and 10.1" out back, the state-of-the-art steel front section chassis with an aluminum rear section and detachable subframe, and the new twin piston rear brake caliper along with the twin aluminum-piston front disc brakes, combine to make sure the Raptor 700R is primed and ready for all kinds of action.

Engine
Type	686cc liquid-cooled w/fan, 4-stroke; SOHC, 4 valves
Bore x Stroke	102.0mm x 84.0mm
Compression Ratio	9.2:1
Fuel Delivery	Yamaha Fuel Injection (YFI) , 44mm
Ignition	16-Bit ECU
Starting System	Electric
Transmission	5-speed w/reverse; wet multiplate clutch
Drive Train	2WD; sealed O-ring chain, eccentric adjustment

Yfz 450 video

Yfz 450 video

YFZ 450

ENGINE:

 

• The fuel-injected 449cc 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 to centralize mass for unmatched handling and makes maintenance easier.

• Camshafts 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 body and includes ISC (Idle Speed Control) for easy, reliable start-up and warming.

Winchester Bay, OR (10/14/2011) - Ever since the economic downturn in 2008, the ATV industry has taken a loss in sales, as many die-hard riding enthusiasts were forced to tighten their belts and cut back on recreational expenses. In addition, the failing economy also affected financing for those seeking to buy new machines, as credit restrictions put a new ATV out of reach for many individuals. These factors spurred Yamaha to come up with a solution to the problem and help out their loyal consumers by re-introducing the original YFZ450 sport ATV to their 2012 line up, with a few changes to help keep costs down for the customer.

The new 2012 Yamaha YFZ450 is a true 450cc machine that offers true 450 class performance, but at a price that is more in line with other manufacturer’s 400cc models. The purpose of the re-introduction of the YFZ450 was to offer an ATV that is priced to bring back the core demographic of consumer by giving them a quad that has proven itself in durability and performance, while keeping it affordable.

Over the past few years we have seen a number of brand new machines released by Yamaha, including the YFZ450R, the YFZ450X, the Raptor 250, and the Raptor 125, as Yamaha continues to reposition itself for consumer benefit in an ever changing and sometimes finicky market.

Today’s market is decidedly price-conscious and it’s with this in mind that announced a new, economical twist to an old favorite with the release of the 2012 YFZ450. This revamped YFZ450 retains the same excellent chassis design and motor features that made the original YFZ such a great performing machine, including its 449cc 5-valve DOHC power-plant and 9.1” front/10.6” rear travel.  It also keeps its efficient dual-hydraulic braking system in the front with two-piston caliper in the rear, as well as push-button ignition, tapered handlebar and cast aluminum swingarm and subframe.  As a matter of fact, the new 2012 YFZ450 looks just like the previous model YFZ450, until you look just a bit closer.