2017 KTM 250 SX

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First Impressions: 2017 KTM 250 SX

Vital Review

First Impressions: 2017 KTM 250 SX - More Motocross Videos

In 2016, KTM went all-in and replaced nearly ever model in the Motocross range... Except for their 250 SX two-stroke. Now, one year later, KTM pulled the trigger and released an all new 250 smoker for 2017. Was the wait worth it? Click play to find out.

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11 comments newest first

My opinion was that they were good, but not exceptional. It was a near perfectly groomed Glen Helen, with few bikes on the course so I would't consider it a true test of the performance of the fork on a very rough track. Having said that, they did work well, without much harshness over the small chop, while staying stiff enough to take heavy braking into corners. A little bit of harshness did creep in late in the day under braking as the bumps got a little bit bigger, but that could be improved with either air pressure or valving. Overall I felt they had a good starting platform that could be dialed in for a wide range of rider abilities and riding styles. One side note: I don't feel that fork action is quite as critical on a two-stroke as compared to a four stroke because the two-stroke lacks the heavy pitching of the four-stroke and likes to be steered with the rear end a bit more.

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How does the engine compare to last year? More across the range or mid to top? Will it pull a stock 450?

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It's a bit more broad across the board I feel. Definitely more rideable. It's still not going to pull a 450, I felt it was still spinning the rear wheel at times, where a 450's torque and track-ability pushes forward harder. In equally capable hands the 450 is still going to produce a faster lap time, but man that 250 is a blast!

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Solid information, sign me up. I'll need two Vital front fender decal's and a large fww. Thanks ML and RB.

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I may just be some measly peasant, but do you reckon we could occasionally get write ups with these videos? I'd love to watch every video but they chew the mobile data pretty quick

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1 member review

Bang for buck!

The Good:

Powerful, light weight, reliable

The Bad:

Front forks (not as bas as ppl make them out to be)

Overall Review:

Love my 2017 250SX. Message me if you want any suggestions for setting it up for offroad. I race mine in motocross, grand prix, sprint enduro, as well as trail ride. 

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Product 2017 KTM 250 SX
Model Year 2017
Engine Size 250cc
Engine Type Single Cylinder Two-Stroke
Engine Displacement 249cc
Bore x Stroke 66.4/72.0mm
Compression Ratio
Fuel System Mikuni TX 38 Carburetor
Ignition Kokusan
Transmission Wet Multi-Disc DDS-Clutch, Brembo Hydraulics/ 5 Gears
Final Drive 13:48
Suspension Front WP Suspension AER 48 USD Ø 48mm
Suspension Rear WP Monoshock 5018 BAVP DCC with Linkage
Brakes Front Disc Brake 260mm/10.24in
Brakes Rear Disc Brake 220mm/8.66in
Tires Front 80/100-21” Dunlop MX3S
Tires Rear 110/90-19” Dunlop MX3S
Overall Length
Overall Width
Overall Height
Seat Height 960mm/37.8in
Wheelbase 1,485mm ± 10mm/58.5 ± 0.4in
Ground Clearance 370mm/14.6in
Rake/Trail 26.1º
Fuel Capacity 7L/1.85gal
Curb Weight 95.4kg/210.3lbs without fuel.
Price N/A
More Info


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