Yamaha YZ250FX Assessment: Specs You MUST Know Earlier than Shopping for

Are you curious about getting a Yamaha YZ250FX however aren’t certain if it’s the fitting bike to purchase? Whether or not you’re a more moderen rider or on the lookout for an excellent enduro bike, you’ve discovered the fitting article!

On this assessment, you’ll be taught what sort of grime bike the YZ 250FX is, why it could or is probably not the perfect bike for you, and what to anticipate when shopping for and proudly owning one so that you just save hours researching and cash by choosing the proper bike.

What’s the Yamaha YZ250FX?

It’s a 250cc 4-stroke cross-country grime bike, which is one other identify for an off-road enduro race bike. It’s based mostly on the YZ250F motocross bike, however there are small modifications that make it way more pleasing and simpler to experience off-road on trails, within the bush, or within the desert.

2023 Yamaha YZ250FX Yamaha YZ250FX Review: Specs You MUST Know Before Buying

Who’s it for?

It’s undoubtedly NOT a good grime bike for newcomers resulting from its aggressive nature – snappy energy and stiff suspension. Nonetheless, it’s an superior enduro bike if you happen to’re an skilled path rider or an off-road racer.

It’s probably the most versatile grime bikes as a result of it could deal with so many forms of using – hare scramble, enduro, exhausting enduro, in addition to some motocross, however does that imply it’s the greatest grime bike you should purchase??

Hold studying to be taught extra concerning the YZ250FX.

Engine – what to anticipate

Primarily based on the YZ250F MX engine, the YZ 250FX has a high-performance liquid-cooled engine that has plenty of energy, however there are some minor variations. For instance, the 250FX is tuned to have a barely broader energy curve.

2015 Yamaha YZ250FX Engine Yamaha YZ250FX Review: Specs You MUST Know Before Buying

This provides you slightly bit extra low-end and midrange torque for a clean and extra predicate energy supply. This makes it much less exhausting to experience within the woods or on trails as a result of it’s not as fairly as snappy or jerky with the throttle.

With that mentioned, that doesn’t imply it’s a beginner-friendly engine – it has numerous energy for simply 250cc.


Going by rear wheel horsepower, the Yamaha YZ250FX has about 38, which might be within the low 40s if you happen to’re measuring on the crank. That’s numerous energy for an off-road motorbike, however that quantity is simply vital if you happen to’re an expert-level rider.

The true energy numbers

You see, 38 HP is simply vital if you happen to’re continually using at peak RPM, which is at about 12,000 RPM. More often than not you’re going to be using at a (a lot) decrease RPM, particularly if you happen to’re an off-the-cuff path rider.

This implies it’s good to contemplate the torque and horsepower from 3000 RPM and better. Trace – the YZ250FX (and most enduro bikes) doesn’t make a lot energy at 3k RPM.

2021 Yamaha YZ250FX 1 Yamaha YZ250FX Review: Specs You MUST Know Before Buying
The reverse engine sucks in additional air = extra energy

If you wish to experience at low RPM, you’ll need an air-cooled path bike or an even bigger enduro bike, corresponding to a 300cc 2-stroke or 450 4-stroke.

5-speed vs 6-speed

In comparison with the 250F MX mannequin, the YZ250FX has a wider-ratio 6-speed transmission, which supplies you a decrease first gear and a taller sixth, however what does that imply for you?

You don’t must compromise on gearing if you happen to’re using off-road. For instance, first gear is low sufficient for many technical using, however sixth gear can also be tall sufficient to cruise at a comparatively excessive pace with out revving the engine out at an excellent excessive RPM (wears the engine out faster).

High pace

The highest pace of a inventory YZ 250FX is about 85 mph, which is noticeably increased than the YZ250F motocross bike – due to its a lot taller sixth gear. This lets you cruise at a better pace or decrease RPM if you happen to’re taking a gravel street within the mountains, or you may go quicker if you happen to’re racing within the desert, corresponding to a hare and hound race.

2021 Yamaha YZ250FX 2 Yamaha YZ250FX Review: Specs You MUST Know Before Buying

EFI – it’s not as sophisticated as you assume

Carburetors can work effectively, however they are often sophisticated, messy, and irritating when diagnosing a no-start or poor operating problem. For those who’re apprehensive about gasoline injection being complicated vs a carb, don’t fear – reliability is excessive and tuning is surprisingly straightforward (particularly on the newer fashions).

So long as you’re utilizing contemporary fuel, not letting your bike sit too lengthy (a number of months), and never letting the tank run dry whereas using, you need to have only a few EFI issues. With Yamaha’s new EFI energy tuner app (that’s FREE), you may tune your 2020 and newer YZ250FX.


Utilizing the identical Kayaba SSS forks and shock because the 250F MX mannequin, it’s very comparable. The massive distinction is that the YZ250FX makes use of barely softer springs in addition to inside valving.

This makes it extra snug and fewer exhausting whereas using off-road as a result of it soaks up the small bumps and rocks significantly better than the motocross suspension setup. 

Entrance forks

The inventory 250FX forks are absolutely adjustable, however an important factor is the spring fee. Inventory fork springs are good if you happen to’re within the 150-180 pound vary, however can work if you happen to’re barely lighter or heavier, relying in your using fashion.

For those who’re over 200 lbs and an aggressive rider, you’ll discover the inventory suspension tender and can need stiffer spring charges on the minimal or else you’ll be bouncing round and extra prone to backside out (absolutely compress) the forks or shock.

Simple clicker adjustment for extra confidence

After that, you can begin adjusting the clickers, which are literally quite simple to tune. You merely flip them in to decelerate the compression or rebound and switch it out if you wish to pace up the damping.

By easy trial and error, you can also make your YZ250FX extra snug as a result of the tires will keep on the bottom for higher traction – in the end supplying you with extra management and confidence as a rider.

Rear shock

If the spring fee is set to your weight & using fashion, then you may get the sag/experience peak correctly set. Having the experience peak too low or excessive will cut back the soundness and/or traction, making it more durable to deal with as a result of the entrance and rear suspension aren’t working collectively for probably the most traction (For instance, the entrance finish washes out simply with an excessive amount of rear shock sag).

You additionally get full damping adjustability, together with a high-speed damping adjustment. That is good for controlling the small bumps and rocks for higher “plushness” with out blowing all through the stroke.

Dealing with 

With comparable dimensions to the YZ250F, the YZ250FX handles effectively and is much like a motocross bike with an exception.

For the reason that suspension is softer, it’s simpler to deal with the 250FX at decrease speeds and tighter turns as a result of the suspension shall be extra “compliant” – it handles higher in comparison with motocross suspension which doesn’t compress a lot at sluggish speeds.

Seat peak – what dimension rider is the YZ250FX for?

Like most enduro bikes, the Yamaha YZ250FX will really feel tall if you happen to’re brief like me (5’6”). It’s because it has over 12” of suspension journey and excessive floor clearance.

With a 37.6” seat peak, the YZ 250FX is an efficient dimension if you happen to’re 5’9”-6’1”, however it additionally is determined by your inseam and expertise stage.

For instance, if you happen to’re a more moderen grime bike rider, then with the ability to contact the bottom with a foot whenever you come to a cease provides you with extra confidence, however as you construct your steadiness expertise off-road, the seat peak received’t matter as a lot since you don’t want to the touch the bottom usually.

Weight – how does it evaluate?

The YZ250FX weighs 245 kilos (moist/curb weight) when it’s able to experience. It’s about 11 lbs heavier than the YZ250F as a result of bigger tank and different off-road equipment – it’s common weight in comparison with different 250cc four-stroke enduro bikes.

In comparison with a 450, the Yamaha 250FX will really feel a lot lighter regardless that it’s solely about 9 lbs lighter than the YZ450FX – why is that?

The rotating mass of the engine offers it extra inertia, making it really feel noticeably heavier. This is among the the reason why a mud bike with an even bigger engine is extra prone to put on you out faster – to not point out the arm-ripping energy that may experience you proper right into a tree whenever you’re exhausted and provides it an excessive amount of fuel!

18” vs 19” rear wheel – what’s the distinction?

One other change from the YZ250F is that the YZ250FX has a smaller 18-inch rear wheel in comparison with the 19-inch on the MX mannequin. The 18” rear tire has a bigger sidewall, which makes it barely softer for higher plushness and traction, which is a pleasant profit for off-road using. 

Mannequin 12 months historical past & modifications

For the reason that YZ250FX is such a well-liked competitors enduro grime bike for Yamaha, they’ve frequently up to date it each 2-3 years with principally minor modifications that add as much as a greater performing and extra dependable bike.

These are probably the most notable updates through the years for the Yamaha 250 cross-country enduro bike:

  • 2015: First 12 months of the YZ250FX
  • 2017: Cylinder and consumption updates for improved mid-to-top-end energy, decrease footpegs for higher dealing with, 
  • 2020: New engine that now works with Yamaha’s free Energy Tuner App, new body, slimmer bodywork
  • 2022: Up to date engine/consumption for higher and extra energy

Reliability – how lengthy will it final?

How are you going to experience it? It’s not going to be dependable if you happen to’re continually bouncing off the rev limiter, however what if you happen to truly handle it?

The YZ250FX is about as dependable because it will get for an enduro race bike. You possibly can simply get 100+ hours on the engine if you happen to’re an off-the-cuff path rider, however it primarily is determined by YOU.

Yamaha Power Tuner App 1 Yamaha YZ250FX Review: Specs You MUST Know Before Buying
Upkeep logs are straightforward with the Yamaha app

For instance, if you happen to’re not altering the oil and air filter when obligatory, the valves, timing chain, and piston are going to wear down a lot quicker resulting from extreme warmth and grime getting into the engine.

Any frequent points?

You may examine an uncommon drawback that someone has had with their YZ250FX, however for probably the most half, there aren’t any main frequent issues with this grime bike moreover the everyday issues.

For instance, it may be exhausting to start out if the battery is just too weak or the fuel is outdated. This text says that these are the perfect ideas for beginning a YZ250FX or 250F (2014+):

  • Run Antigravity Batteries’ AG-801 (Amazon) – extra cranking amps than inventory
  • Set the idle to about 1,900–2,000 rpm whereas the bike is in gear – the ECU modifications idle RPM whenever you put it into any gear
  • Sizzling begins – Barely flip the throttle (2-3mm open)
  • If it flames out and received’t begin – press the kill change for five seconds – it supposedly resets the pc
  • Modify the clutch lever in order that it’s not partaking when you may have it pulled in (beginning in gear)

YZ250FX flameouts/low RPM jerky throttle

Some folks point out that their bike stalls simply (flame out) or the throttle is jerky/snappy at low RPM. It’s usually a easy fueling problem inflicting this.

To repair it, a gasoline controller/tuner or the Yamaha energy tuner app can add extra gasoline to clean out the ability and throttle response. Flame outs and the jerky throttle is usually brought on by a lean gasoline combination. 

YZ250FX Specs & Dimensions

These are the specs from Yamaha’s web site:

Producer Yamaha
Years Made 2015-current
Engine 250cc liquid-cooled 4-stroke
Transmission 6-speed wide-ratio handbook clutch
Seat Top 37.8” (96cm)
Suspension Journey (Entrance/Rear) 12.2”/12.5”
Weight (Curb/Moist) 245 lbs
Horsepower 38 HP
High Pace 85 MPH
Gas Capability 2.16 Gallons
Worth (New MSRP) $8,899

Is the YZ250FX the fitting grime bike for you?

Nonetheless making an attempt to determine if the Yamaha YZ 250FX is an efficient alternative for you?


  • Quick & straightforward to experience for an enduro bike
  • Good low-end and midrange torque for a 250 four-stroke
  • Electrical begin
  • Gas-injected – no coping with jetting (Yamaha has a free tuner app!)
  • Much less exhausting than a 450
  • No mixing fuel
  • Dependable for a race bike
  • Nice suspension and dealing with for aggressive off-road using
  • Can deal with some gentle observe/MX using
  • Extensive-ratio transmission is good for path using at high and low speeds
  • Holds its worth when


  • It’s very quick for a newbie – snappy energy is more durable to manage
  • Suspension is stiff if you happen to’re a newbie or novice path rider
  • No backup kick starter
  • Costly in comparison with a path bike
  • Engine rebuilds could be very expensive (extra transferring components)
  • EFI requires a computer-controlled gadget to tune (new fashions can use free Yamaha tuner app)

How a lot does the Yamaha YZ250FX value?

The MSRP of a brand new YZ250FX is $8,899, nonetheless, that doesn’t embody the seller charges and taxes. Out-the-door value will seemingly be over $10k, however you will discover a used one a number of thousand cheaper.

You will discover a used YZ 250FX within the $4000-8000 value vary, relying on the 12 months and situation. Nonetheless, your native market provide & demand may also play a job within the worth of it.

YZ250FX vs YZ250F

These are the sensible variations between the Yamaha 250F and 250FX (MX vs enduro bike):

  • Engine – 250FX has smoother and extra predictable energy
  • Suspension – 250FX is noticeably softer for off-road using
  • Rear wheel – Off-road 18” tire on 250FX
  • Kickstand – 250FX has one, 250F doesn’t
  • Gas tank – Bigger capability on YZ250FX
  • Muffler – barely quieter on 250FX
  • Chain – O-ring chain on 250FX
  • Skid plate – Off-road mannequin choice for cover
  • Low-fuel warning mild – Off-road mannequin accent

YZ250FX vs WR250F

Though the WR250F is much like the YZ250F MX bike, it’s not as carefully associated because the YZ250FX. For instance, the most important distinction is that the 250FX has a snappier energy curve and stiffer suspension than the WR250F mannequin.

This makes the YZ250FX a more sensible choice if you happen to’re an skilled or extra aggressive rider that may benefit from the additional energy and stiffer suspension. The WR250F is slightly higher for extra informal path using and in addition comes with a headlight and tail mild.

Learn to path experience with confidence

I need to enable you to develop into a safer and extra assured path rider if you happen to’re new, simply getting again into using, or struggling to construct your confidence. Most individuals attempt to determine it out on their very own, however this causes you to kind dangerous habits that trigger you to have much less management and whiskey throttle right into a tree or fall over each 5 minutes. Seize my FREE information to construct your confidence shortly right here.