EVERYTHING YOU NEED TO KNOW ABOUT THE 2018 YAMAHA YZ450F

The Yamaha YZ450F
is a four-stroke motocross racing motorcycle built by Yamaha Motor Corporation.
It was the successor to the previous YZ426F, which was discontinued in 2003. Bicycle World
and
Dirt Rider
magazines as the bike that started the four-stroke dirt bike revolution.[1][2] The 2006 YZ250F and YZ450F were the first production motorcycles to feature titanium. spring suspension.[3]

The WR450F is the enduro version of the YZ450F.

First generation: YZ400F 1998–2000

Yamaha introduced the YZ400F into production in 1998 following a successful AMA season in 1997. It was "the first modern production four-stroke motocross to compete directly with the two-stroke engine."[1] Yamaha initially aimed for a dry weight of 233 lb (106 kg) (on par with 250 two-strokes of the time), but the bike weighed 250 lb when produced. The bike had a redline of 11600 rpm.[8][ need better source

] power and torque are close to their 250cc two-stroke competitors.[1] It used engine compression braking, which allowed the engine to slow the motorcycle during deceleration, allowing the brakes to rest.[1] The 1998 YZ400F was the first bike to feature a Keihin FCR carburetor.

In 1998, Doug Henry won the AMA National Motocross Championship aboard a YZF, becoming the first rider to win the championship on a four-stroke motorcycle.
This victory is considered by some to be a turning point in the world of motocross—the first time a four-stroke motorcycle was recognized as a competitive racing machine.[7] Second generation YZ426F

Second generation: YZ426F 2001–2002

In 2000, Yamaha updated the YZ400F, increasing displacement to 426 cc. See for more power and throttle response. Additionally, the carburetor and jets have been updated to alleviate the YZ400F's starting problems.

The following year, 2001, Yamaha replaced the old steel valves with titanium ones. The new valves were over forty percent lighter than the previous valves, allowing for lighter, softer valve springs, which in turn allowed for higher engine speeds, improved throttle response, higher rev ceilings, and more power.[ 4] The crankshaft has also been redesigned, and the entire design has been redesigned for quicker throttle response and, according to Yamaha, "less loss of horsepower." In addition to the engine modifications, some changes were made to the transmission to reduce power and ensure durability. The suspension also received minor overhauls to reduce weight and provide a smoother ride throughout.[9] Yamaha also developed a new exhaust pipe design so that replacing the oil filter no longer requires removing the exhaust manifold. The carburetor tuning was changed to cope with idle starting and take-off problems.

Also in 2001, the steel subframe was replaced with aluminum, painted blue. In 2002, the blue paint job was discontinued and remained pure aluminum.[10] Motorcycle.com says that “the gas tank is thin enough to allow for good fore and aft movement while providing something nicely shaped to hold onto your knees. In fact, the entire ergonomic package on this YZF is well thought out. They flex well and are well positioned for good rider control and leg room. The footpegs are well-made devices with a wide platform and sit in a position that keeps them from dragging over ruts without putting pressure on the rider's legs.”

For 2002, Yamaha updated the CD Digital Ignition system, which provides a more precise spark and optimal timing for faster, stronger response under hard acceleration and less kickback during startup.
There's also an all-new swing arm that's lighter and stronger, reducing weight, increasing rigidity and improving rear suspension performance. The anodized finish gives the bike a unique look. The 426 also features a larger swing mechanism for longer life. A larger rear brake rotor has also been added, meaning greater stopping power.[11] Third generation YZ450F

YZ450FX enduro motorcycle chassis

The YZ450FX's enduro chassis feels larger than previous models, largely because it has a wider radiator guard. The curb weight is 118.8 kilograms, and this weight is much easier to manage while riding than when it needs to be lifted onto a stand for some reason.

Instant throttle response makes the Yamaha YZ450FX feel lighter during the ride, especially when pushing the throttle to get over an obstacle, which the bike does with ease thanks to the stable, tightly built chassis. The feeling of a strong and reliable bike makes fast sections less intimidating, as well as turns. The motorcycle turns easily with a jerk of the gas in a controlled drift.

Third generation YZ450F 2003–2005

In 2003, the YZF received the biggest update in its history. First, the engine displacement was increased to 449cc to comply with the new AMA Motocross maximum displacement rule, the engine now producing over 52 hp. (39 kW). The frame and plastic were then updated to look sleeker. Additionally, the YZF's weight has been reduced from the original 250 lb (110 kg) to 233 lb (106 kg). The bike had enormous power; however, many thought the bike had too much power for track motocross.[12]The 2005 YZ450F was the first YZ450F with KYB dual chamber cartridge forks.

Fourth generation YZ450F 2006–2009

Fourth generation YZ450F

The YZ450F received a major update for 2006, with more than 300 parts changed and improved. Power was smoothed out and the bike became easier to ride, ending the complaint that the YZ had too much power.[13] The transmission was returned to a more traditional five-speed. An all-new single-frame aluminum frame reduces weight by another 10 pounds.

In 2006, KYB SSS forks appeared.

In 2007, changes were made to the camshaft and exhaust system, shifting power from low to mid-rpm. 2008-2009 We moved the power range up to mid-range.

The world's first application for the production of energy tuners

Smartphones exactly live up to their names. The YZ450F has built-in Wi-Fi functionality that can connect to your Android smartphone or iPhone (once you've downloaded the app - which is free with the purchase of the bike). It allows you to adjust the ignition and fuel supply, as well as many other functions.

The 2018 YZ450F is the world's first production motocross motorcycle with wireless smartphone-based engine tuner. All-new Yamaha Power Tuner for iOS and Android The app and communication control unit connect the rider to the bike like never before. The new Yamaha Power Tuner app can make changes to fuel and ignition mapping - downloaded wirelessly to the bike via the built-in Wi-Fi system - for ultimate tuning on the trail.

The Wi-Fi block is hidden behind the left side panel.

The Journal feature allows you to take notes on your riding location, conditions, bike settings and more, giving you a baseline for future rides. The app can also monitor a range of information such as RPM, throttle position, engine coolant temperature and more. There is also a maintenance feature with customizable mileage counters that allows you to track the completion time of your selected items.

The new Yamaha Power Tuner app, released with the 2018 YZ450F, allows engine detailing to be tweaked in even more detail than before. It also allows users to share settings among their team or with friends (along with other information), turning the system into a tool that helps facilitate communication.

Fifth generation YZ450F 2010-2013

Fifth generation YZ450F

On September 8, 2009, Yamaha introduced the all-new fuel-injected YZ450F. The engine cylinder is angled rearwards, the crankshaft angle has been changed to allow for more complete combustion, the 5-valve head is now a 4-valve head, the gas tank is located under the seat, and the exhaust pipe exits from the rear. cylinder, and the air intake is now located at the front of the bike. They have a new double-sided frame that allows for improved steering and new engine components. The whole package comes together to create a mass-centralized bike. The bike was presented by the Yamaha factory. Motocross rider James Stewart. Top speed was recorded at 80 mph.

Recommendations

1. ^ a b c d
   Lewis, Jimmy (January 2002), "Main Event: Honda CRF450R Takes on KTM 520 SX and Yamaha YZ426F",
   Bicycle World
   ,
   41
   (1), pp. 70 et seq. (8)
2. Hoffman, Scott (February 2002), "The Looming Future of the 2003 YZ450F Concept", Dirt Rider
   , Primedia Enterprises, pp. 28ff (3), Less than a year ago, hints of an "all-new Yamaha YZ450F" began to circulate in the motocross world. The rumors were much less shocking compared to when Yamaha first unveiled its factory YZ400M in 1997 and its plans to create a competitive four-stroke motocross, although it still had merit. This was also due to Honda's latest news regarding its CRF45OR four-stroke motocross bike project. However, Yamaha cemented its name five years ago and its revolutionary machine will forever be remembered as the catalyst that lit a fire in the smoldering world of four-stroke motocross.
3. "Titanium Spring Improves Motocross Bikes", Advanced Materials and Processes
   ,
   164
   (7), pp. July 9, 2006, archived from the original on 2012-10-26, Yamaha YZ125 and YZ250 two-strokes are reported for the 2006 model year and The YZ250F and YZ450F four-stroke motocross motorcycles feature titanium shock-absorbing springs. Timet Automotive, Morgantown, PA. Yamaha says the new springs have "outstanding strength and fatigue resistance" and reduce unsprung weight for improved suspension performance.
4. ^ a b
   "2001 Yamaha YZ426F: MD Ride Review".
   motorcycledaily.com
   .
5. "Page not found!" (PDF). www.amaproracing.com
   . Cite uses a generic header (help)
6. “YZ426F: Miracle machine? — Motocross news, race reports, videos, photos, interviews, How-Tos.” transworldmotocross.com
   .
7. ^ a b
   Motorcycle Hall of Fame: Doug Henry Archived 2010-01-13 at the Wayback Machine
8. GT Thunder test bench
9. "Year 2001 Yamaha YZ426F." Motorcycle.com. 2000-10-27. Retrieved 2011-12-27.
10. "Year 2001 Yamaha YZ426F." Motorcycle.com
    .
11. "New Yamaha Dirt Bikes for 2002: Off-Road.com." Dirtbike.off-road.com. 2005-11-01. Retrieved 2011-12-27.
12. "First Impression: 2004 Yamaha YZ450F - Motocross News, Race Reports, Videos, Photos, Interviews, Tips." transworldmotocross.com
    .
13. "2006 Yamaha YZ450F - First Ride - MotorcycleUSA.com." motorcycle-usa.com
    .

2021 Yamaha YZ450FX Enduro

The 2021 Yamaha YZ450FX enduro inherits most of the features from the previous generation (2014-2017) Yamaha YZ450F motocross motorcycle , but with a few cross-country-specific features, such as long gears, increased radiator volume, 18-inch rear wheel, oil seal chain, crankcase guard, side stand, offroad suspension tuning, new clutch (including new clutch material, springs, clutch release lever and oil valve). Let's see how the blue flagship behaves.