Motorcycle specifications YamahaYZ 250 F 2024 Optimum shape

While Yamaha continues to develop its Ténéré range for off-road adventure, it has not forgotten to improve its YZ cross-country bikes. Now it's the turn of the 2-and-a-half to be upgraded, with a whole series of optimizations.

For the 2024 model year, Yamaha is unveiling a new-generation YZ 250 F, featuring an all-new frame inspired by the YZ 450 F, ultra-compact bodywork, increased mid-range power and new tuning features via the Power Tuner app. The YZ 250 F 2024 is lighter, faster and easier to ride, thanks to the highly appreciated strengths of its predecessor.

All-new aluminum frame inspired by the YZ 450 F

The new-generation YZ 250 F features an all-new aluminum frame that has proven its worth on the current 450. The new frame provides easier, lighter handling and better feedback, enabling the rider to push the limits and make the most of the bike's powerful low- and mid-range torque.

The main improvement to the new frame is the repositioning of the steering column, lowered by 15 mm. This important change allows the masses to be better centralized, which improves handling and enables sharper steering changes.

The new steering column is also thinner and lighter, helping to reduce the weight of the new 250. To accommodate the 2024 model's new steering column, the tank rails are also mounted much lower and feature a new U-profile at the rear, which modifies the rigidity of the frame to achieve an ideal degree of controlled flexibility.

Thanks to its new design, which lowers the center of gravity and improves shock absorption, this chassis enhances the feeling of being at one with the machine, and makes cornering quicker and more agile.

all-new, slimmer bodywork with flatter seat

The all-new bodywork gives the YZ-F a slimmer, lighter and more streamlined silhouette, making the bike easier to ride, more consistent and faster. The 2024 model features an all-new bodywork which, like the new frame, is inspired by that of the YZ 450 F. Narrower by 50 mm, it makes it easier for the rider to shift his body weight forward. A new seamless saddle, 6 mm narrower and much flatter, with a height difference between front and rear reduced by 15 mm on the 2024 model, further facilitates rider movement. The newly designed, compact front mudguard promotes air flow to the radiators for improved cooling. The short, flat rear fender and slim side panels reinforce the more compact, lighter appearance of this new-generation 250 cm3 4-stroke.

rider position triangle

Subtle yet significant improvements have been made to the ergonomics of the YZ 250 F thanks to precise modifications to the geometry of the rider's triangle. Thanks to a new, flatter seat that's 5 mm higher, and footrests that are 5 mm lower, the rider's legs benefit from an extra 10 mm of legroom. The handlebars have been moved closer to the rider which, together with the new position of the seat and footrests, improves ergonomics and handling.

optimized KYB suspension settings

KYB suspensions are considered among the best in their class, and for 2024 the internal components of the fork and rear shock have been improved to optimize the performance of the new frame. Front and rear damping settings have been revised to improve shock absorption and traction, and a new hand-adjustable compression damping system at the fork allows faster and more obvious suspension adjustment. For better protection against scratches and splashes, fork protectors wrap further around the sides of the inner tubes and, for improved durability, the KYB fork is equipped with new long-lip seals that prevent impurities from penetrating.

improved rear braking

The rear brake plays a key role when changing direction, entering corners and adjusting the angle of the moving machine, and the feel transmitted to the rider is essential in this control. That's why the YZ 250 F uses a new rear hose with reduced rigidity that improves braking balance and gives the rider more precise control.

enhanced performance thanks to efficient airflow management and fuel injection tuning

A new, highly efficient airflow management system is used on the YZ250F, with air now entering the airbox via a new rear duct system like that used on the MXGP and AMA Supercross-winning YZ450F. The new compact bodywork incorporates ducts in the new side panels, frame and tank that channel fresh air to a new large-capacity round-profile air filter, with 30% greater cleaning capacity. What's more, the lower housing is now made of rubber rather than plastic, to promote air pulsation at the intake. The new definition of rear-duct airflow helps improve performance at medium and high speeds, as well as the over-revving characteristics of the 250 cm3 inverted-head 4-stroke engine.

The new ECU features updated fuel and ignition mapping, designed to optimize the performance gains achieved by the various engine modifications. Riders familiar with the current model will notice an improvement in mid- and high-speed performance which, combined with the bike's legendary low- and mid-range torque, makes the new YZ 250 F an even more competitive motorcycle.

Low-friction cam chain

The 250 cc engine is renowned for its high torque at low and medium engine speeds, and for its great controllability in a variety of conditions. These qualities have made it one of the best 4-stroke 250 cc motocross engines. Yamaha engineers set out to preserve all the positive attributes of this engine, while redoubling their efforts to improve its high-speed performance. To accommodate this, the YZ 250 F benefits from a new, wider and more durable low-friction cam chain. The double overhead camshaft engine also features new chain sprockets and chain tensioner settings to optimize efficiency.

new adjustable traction control system

The 2024 two-and-a-half features a new traction control system with two levels of assistance, plus an OFF function. Controlled by the latest Power Tuner application, this system gives the rider greater control on wet or unstable surfaces. With less loss of traction, the rider can concentrate fully on the terrain.

start control system

The YZ250F benefits from a new start control system with a "rev limit" function that can be set between 6,000 and 11,000 rpm in 500 rpm increments. This allows the rider to start at full throttle and focus fully on the holeshot. When the start control system detects that starting has taken place, the rev-limit function switches off automatically and, once 3rd gear is engaged, the start control system deactivates.

new, simplified Power Tuner application

Yamaha's Power Tuner application is one of the most significant developments of recent years. The brand was one of the first to offer wireless engine tuning, and the latest-generation system has been designed to be even easier.

The YZ 250 F 2024 Power Tuner application now features a "quick tune" option with a scroll bar to alternate between explosive and softer mapping. This system, designed for ultra-fast trackside tuning, is the easiest and most intuitive ever used on this model.

The new Power Tuner application retains the 4x4 matrix, enabling detailed mapping modifications designed for professional teams seeking optimum performance. A new multi-function switch lets you toggle between two downloaded mappings in a single session.

The Power Tuner application can also be used to set the YZ250F's traction and start control parameters. The system records data lap by lap, enabling the effectiveness of different mapping settings to be evaluated. The app also includes a section dedicated to suspension, with advice and suggested settings adapted to different situations.

technical specifications :

- All-new, double-beam aluminum frame inspired by the YZ 450 F, featuring optimum rigidity
- Slimmer, more compact bodywork for greater agility
- Flatter, narrower saddle for greater freedom of movement
- Optimized KYB suspension settings
- Manual compression damping adjuster
- Improved rear braking feel
- Improved mid- and high-rpm performance
- New intake duct
- New ECU with optimized injection settings
- New low-friction cam chain
- New traction control system with two levels of assistance
- Updated start control system
- New, more intuitive Power Tuner application
- New lap timing function
- FAQ-style engine and suspension configuration guide

The Yamaha YZ 250 F 2024 will be available from October 2023 and will be offered in Icon Blue with new motifs and in Anniversary White.

News and media credits: Yamaha Motor Europe