It’s been 45 years since Yamaha debuted the original model YZ250 motocross bike, and through the years, the line has evolved into a true industry favorite. The 2019 iteration of this liquid-cooled classic brings the bike up to speed for modern riders, with push-button electric starting, smart device connectivity and updated suspension for supreme confidence while you’re tearing up the track. Whether you’re looking for your first bike or you’re making a new addition to the stable, Yamaha’s YZ450F has features aplenty to suit any rider.


Bike Basics

The YZ450F runs on a liquid-cooled 449cc DOHC four-stroke engine, with a 97mm bore, 60.8mm stroke and true titanium valves. It features a five-speed constant mesh transmission, multi-plate wet clutch and Mikuni brand 44mm fuel injection. This bike is being produced in two bold color schemes, including a clean white version and classic Team Yamaha Blue. Graphics are embedded right into the bodywork as well, so they’re more resistant to dings and peeling problems.

Detailed dimensions for the Yamaha YZ450F are as follows:

  • Length, Width, Height: 86 x 32.5 x 50.6 in.
  • Wheelbase: 58.5 in.
  • Seat Height: 38.6 in.
  • Ground Clearance: 13 in. (maximum)
  • Trail: 4.7 in.
  • Caster Angle: 27.33°
  • Wet Weight: 245 lbs. (standard features only, fuel and oils included)
  • Fuel Capacity: 1.6 gal.

Chassis Chat

This Yamaha dirtbike boasts its reputation for a reason, and this year’s model certainly continues the trend. The YZ450F offers best-in-class KYB-powered suspension, with a compact aluminum frame that’s rugged and refined, maintaining excellent handling. Heat-resistant rear brake rotors complement 270mm front discs for outstanding control and stopping power. Weight has been shaved throughout the body of the bike, including at the wheels, where computer-aided cross-section refinement achieves an ideal balance of performance and durability.

One crucial change for 2019: Yamaha has optimized the suspension settings for improved contact feeling, with burlier axle collars at the front and back to stiffen up the ride.

Engine Enhancements

One of the YZ450F’s most intriguing features is undoubtably the Power Tuner smartphone app, which connects directly with the bike to provide control of ignition timing maps, as well as the air-fuel mix. It allows for the tracking of race logs and engine runtime, and can even provide diagnostic information via any supported Android or iOS device.

Another popular addition to the YZ450 is the compact electric starter, which is convenient under most circumstances and crucial in the heat of competition. It delivers consistent hot or cold performance and shaves even more weight by replacing the obsolete kickstarter with an ultralight lithium-ion battery. Coupled with the advanced Launch Control System, you’re sure to get out of the gate with quick starts and smooth control every time.

Find Your YZ450F

When you’re ready to experience this Yamaha flagship for yourself, don’t trust just any dirt bike dealer. Chaparral Motorsports is your SoCal destination for premier pricing and inventory selection, and we’ve got all the most trusted brands in the business. Get a look at the YZ450F today, plus find all the parts and accessories you need to show out on the track.