Yamaha’s 2019 off road model range includes a new YZ 450FX, specifically designed for GNCC and cross-country racing and based on the completely redesigned YZ450F model. 

 

First details of Yamaha’s “GNCC and Hare Scrambles focused racer”, the 2019 YZ450FX have been released.

The all-new cross-country YZ450FX adopts the upgrades found on the YZ450F motocrosser last year which we tested and include: new frame, suspension, engine and electronics – including the Yamaha’s exclusive Power Tuner smartphone app – along with changes specifically for cross-country competition.

 

19 YZ450FX TeamYamahaBlue a S6 Enduro21 560

 

Yamaha YZ450RX in detail: Rearward-Slanted Cylinder Design

The YZ450FX’s distinct rearward-slanted cylinder design and forward-mounted intake system features a straight intake tract, aggressive cam profiles, high-compression “box bridge” piston design with DLC-coated piston pin, and more. The YZ450FX features specific ECU settings to suit the needs of cross-country racing.

 

19 YZ450FX TeamYamahaBlue D14 Enduro21 560

 

Electric Starter System

The YZ450FX features a compact electric starter system to minimize restart delays on track and add convenience everywhere else. Powered by a high-capacity and ultra-lightweight four-cell lithium-ion battery, the system adds minimal weight.

 

19 YZ450FX TeamYamahaBlue D01 Enduro21 560

 

Yamaha Power Tuner App

Yamaha created the Power Tuner app, bringing the power of the GYTR Power Tuner to your iOS or Android device and letting you make adjustments quickly and easily trackside. Using WiFi to connect to the bike’s onboard CAN-bus network, the app allows owners to adjust air/fuel mixture and ignition timing maps to tune engine performance for track conditions, record race log information, monitor a range of data such as maintenance and system diagnosis, engine run time, and more.

 

19 YZ450FX TeamYamahaBlue D07 Enduro21 560

 

Adjustable Engine Mapping

A handlebar-mounted map switch allows the rider to quickly select between preloaded engine maps – loaded and configured in the Power Tuner app – to account for changing track and weather conditions.

 

19 YZ450FX TeamYamahaBlue D02 Enduro21 560

 

Advanced Fuel Injection

The engine breathes through a 44mm Mikuni throttle body fed by a high pressure electric pump to ensure optimum fuel atomization and power for a wide range of riding conditions.

Robust Transmission and Clutch

The YZF450FX’s wide-ratio, five-speed transmission enhances cross-country performance for more flexible gearing selection in open terrain.

 

19 YZ450FX TeamYamahaBlue D11 Enduro21 560

 

Aluminium Frame

Upper frame bracing provides rigidity and durability, while rear frame spars and cross-country-specific engine mounts centralize mass for the improved balance of bump absorption, stiffness and rider feeling.

 

19 YZ450FX TeamYamahaBlue D10 Enduro21 560

 

Compact Body and Seat Design

The YZ450FX features stylish bodywork from tip to tail, including a large 2.15 US gallon (8.1ltr), mass-centralized fuel tank, the body design is narrow for more comfortable knee grip and control feeling, while the narrower and lower seat gives the rider additional room to move aboard the machine.

Class-Leading Suspension

Fully adjustable KYB coil spring-type fork with speed sensitive damping provides balance between handling and bump absorption. The linkage type rear suspension features a KYB shock with specially-tuned damping characteristics to match the YZ450FX chassis and woods riding. 

 

19 YZ450FX TeamYamahaBlue Enduro21 1200

 

270mm Front Brake

Large 270mm front disc brake coupled with aggressive pad material offers outstanding braking performance and machine control, with exceptional stopping power and controllability.

Cross-Country Wheels and Tyres

The YZ450FX features enduro-specific tyres for the ideal balance of traction and durability, complete with an 18-inch rear wheel. Each wheel’s cross-sectional profile is computer-designed to shave valuable weight without sacrificing durability, too.

 

19 YZ450FX TeamYamahaBlue D04 Enduro21 560

 

GNCC-Focused Details

The YZ450FX includes a range of cross-country specific upgrades compared to the YZ450F motocrosser, including a composite engine guard, sealed O-ring chain, fuel level warning indicator and a folding aluminium kickstand.

 

19 YZ450FX TeamYamahaBlue A16 Enduro21 560

 

Adjustable Handlebar Mounts

The 4-position adjustable handlebar mounts are rubber mounted to improve comfort, reduce handlebar vibration and allow riders to adjust the bar position, while the oversize 1-1/8” handlebar itself is strong but lightweight to centralize overall mass.

Embedded Graphics

Yamaha’s unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage.

 

19 YZ450FX TeamYamahaBlue D12 Enduro21 560

 

We’re awaiting news on the 2019 WR models but are expecting to test the 2019 YZ250F next week so stay tuned.

Price: $9,499 

Available: July 2018 

More information: yamahamotorsports.com

 

 

jon.pearson enduro21 april 2017

Jon Pearson
Enduro21 Editor and Bike Tester
jon.pearson@enduro21.com