Dirt Bikes

2024 Yamaha YZ250X Technical Information

Features and specifications of bLU cRU’s 250 two-stroke cross-country model.

Updated: March 17, 2024

The YZ250X is at the top of Yamaha’s two-stroke cross-country model range, and it received major updates in 2023. We got our hands on the mechanically unchanged 2024 Yamaha YZ250X, and reviewed some of its technical features and differences from the YZ250 motocrosser. Read on to learn more about the bLU cRU’s premix-burning quarter-liter dirt bike designed for off-road and woods racing.

After an overhaul in 2023, Yamaha’s YZ250X is mechanically unchanged for 2024.James Lissimore

The heart of the YZ250X is Yamaha’s proven carbureted liquid-cooled two-stroke 249cc single-cylinder engine tuned for off-road racing.James Lissimore

Its five-speed gearbox uses the same first and second gear ratios, a lower third gear, and taller fourth and fifth gears compared to the YZ250 motocrosser.James Lissimore

The quarter-liter two-stroke cross-country model’s Yamaha Power Valve System (YPVS) uses a different thickness washer, increasing time for the power valve to completely open.James Lissimore

The Keihin PWK 38S carburetor features a power jet circuit and throttle position sensor specifically tuned for off-road racing.James Lissimore

Seeing as the YZ250X is a competition off-road model, it does not use a spark arrestor.James Lissimore

The YZ250X uses the same fuel tank as the YZ250 but has a reserve on the petcock, leaving you with enough fuel to get back to the pits for a refill.James Lissimore

Since this is a kickstart, carbureted bike, the cockpit is free of switches and warning lights.James Lissimore

KYB’s Speed Sensitive System (SSS) 48mm coil-spring fork handles front suspension duties, and the KYB shock features a 50mm piston. In addition to being spec’d with off-road-specific valving, spring rates are softer than the YZ250 at 4.3 Nm and 48 Nm, respectively.James Lissimore

Last year, the YZ250X received new integrated body panels, slimmer radiator shrouds, a narrower fuel tank, and flatter seat.James Lissimore

An 18-inch rear wheel and Dunlop Geomax MX33 tires keep the YZ250X glued to the ground.James Lissimore

For MY23, the Tuning Fork brand made changes to the front brake with a more rigid caliper equipped with larger pistons, and a redesigned 270mm front rotor.James Lissimore

The YZ250X gets an O-ring chain. Its 14/50 gearing is the same as the YZ250’s.James Lissimore

A convenient aluminum kickstand is shared with the YZ125X.James Lissimore

Available now in Team Yamaha Blue, the 2024 Yamaha YZ250X carries an MSRP of $8,099, which is $100 more than the motocross model.James Lissimore

2024 Yamaha YZ250X Specs

MSRP:	$8,099
Engine:	Liquid-cooled, two-stroke single-cylinder
Displacement:	249cc
Bore x Stroke:	66.4 x 72.0mm
Compression Ratio:	7.9~9.4:1
Transmission/Final Drive:	5-speed/chain
Fuel System:	Keihin PWK 38S 38mm carburetor
Clutch:	Wet, multiplate; cable actuation
Frame:	Aluminum
Front Suspension:	KYB Speed Sensitive System (SSS) 48mm coil-spring fork, compression and rebound damping adjustable; 11.8 in. travel
Rear Suspension:	KYB shock, spring preload, high/low-speed compression damping, and rebound damping adjustable; 12.4 in. travel
Front Brake:	Nissin 2-piston caliper, 270mm disc
Rear Brake:	Nissin 1-piston caliper, 240mm disc
Tires, Front/Rear:	Dunlop Geomax MX33; 80/100-21 / 110/100-18
Rake/Trail:	27.7°/4.8 in.
Wheelbase:	58.5 in.
Ground Clearance:	14.2 in.
Claimed Seat Height:	38.4 in.
Fuel Capacity:	1.8 gal.
Claimed Wet Weight:	229 lb.
Availability:	Now
Contact:	yamahamotorsports.com