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2011 KTM Motocross Lineup First Look

Tuesday, May 18, 2010
KTM Motorcycles has released its 2011 line of dirt bikes and the new model year brings big technological changes. PDS suspension has been a defining characteristic of the Austrian brand for years – probably the defining characteristic. After years of defending the linkage-less shock design, KTM has finally conceded that a linked system works better for motocross and Supercross applications. Spearheaded by the introduction of the all-new 350 SX-F, every SX-F model will come with the new shock while the 2-strokes retain the PDS. Fuel injection also comes to the table as well as a list of smaller updates across the motocross range.

2011 KTM 350 SX-F
The KTM 350 SX-F is finally here. Fuel injection, electric start and a linkage shock top a long list of highlights.
2011 KTM 350 SX-F
The new 350 is one of the most highly anticipated machines in the past decade, and for good reason. This is the first “in-between” motocross bike which could potentially fill a huge void that is created by the nimble but underpowered 250s and overbearing 450s. KTM has blended some of its favorite traits with new technology to create what it’s touting as the perfect motorcycle. With 10-time World Motocross champion, Stefan Everts, at the helm, maybe it’s not such a far-fetched claim.

For the first time on a dirt bike, KTM is using fuel injection with 42mm throttle body and a Keihin engine management system on the 350. Like other orange bikes, alternate engine maps are available with the use of a switch available from the KTM PowerParts catalog. The EFI system adjusts for changes in temperature and elevation to ensure proper fueling. It also features an automated cold start – which leads into the next awesome tidbit. The 350 will be electric start, but it has the ability to mount a kick start as well, giving riders plenty of options (good job, KTM). From our experience, even if the foot lever is available, nobody will ever use it as long as the magic button is available. KTM has proven its motocross bikes to be excellent e-starters with the 450 SX-F.

A five-speed transmission operated by hydraulic Brembo clutch manages the power output from the DOHC single-cylinder engine. The 349.5cc mill uses four titanium valves with a claimed rev limit of 13,000 rpm. Bore and stroke are 88 x 57.5mm compared to 76 x 54.8mm on the 250 and 97 x 60.8mm on the 450.
2011 KTM 250 SX-F Engine2011 KTM 350 SX-F cylinder head
The 350 SX-F uses a DOHC engine with four titanium valves with
Keihin engine management system and 42mm throttle body.

KTM retains its chromoly frame design, but have made changes which increase torsional rigidity and lessen longitudinal stiffness. The frames only differ between PDS and the new linkage shock in the mounting points.

Yes, you read that correctly, KTM now has a linkage. Adding a linkage allows the shock shaft to move more quickly through its rising rate. This “high spring progression” is preferred for the increased loads associated with MX and SX. Off-road models and the 2-stroke SX machines will still come with the PDS version (now longer), where KTM claims the technology is still superior. Both types of shock absorber are manufactured by WP and have KTM’s user-friendly shock collar for simple preload adjustment. Both shock types require a new cast aluminum swingarm with updated mounting positions.

All SX-F models also get the latest generation 48mm WP fork to pair with the new triple clamps from 2010. Settings on the closed-cartridge fork are tailored to match the chassis and new shock, but the fork is relatively unchanged.

KTM has stressed the importance of making the 350 handle like a 250, and has focused on the ergonomics. A thin layout over the two-gallon fuel tank and particular attention paid to the contact points promise a nimble-handling machine. Stylistically, the rear fender is wider and 50mm longer. The new models also trade their black rims for silver.

2011 KTM 350 SX-F Video

2011 KTM 450 SX-F
The 2011 450 SX-F retains it 41mm Keihin carburetor – though who can argue after it won out 2010 450 Motocross Shootout against a slew of EFI machines.

2011 KTM 250 SX-F
Top: While the 450 is relatively unchanged, the 250 SX-F gets major updates as well.Bottom: KTM still offers 2-stroke fun with the small-but-potent 150 SX.
2011 KTM 125 SX
2011 KTM 250 SX-F
The quarter-liter machine is the other KTM dirt bike to receive fuel injection – opposite of the Japanese brands which have converted the 450 machines first. New camshafts and valve timing handle the new fueling system and updated intake port, intake boot and exhaust. The header is redesigned and the muffler outlet is larger for better exhaust flow. The 2011 KTM 250 SX-F is kick start, but has been modified this year to allow for a conversion to e-start if desired using a PowerParts kit with starter, ignition cover, gears, battery and wiring.

2011 KTM 250 SX
KTM continues to keep the 2-strokes alive and well, not only by refusing to axe them from the lineup, but by actually improving the design each year. For 2011, the 250 SX has the new PDS chassis with a revised airbox. The exhaust pipe is updated and matches the changes to the cylinder, including lower exhaust ports and new timing. A two-part silencer uses plastic injection molded around the aluminum housing for better attachment.

2011 KTM 150 SX
The small-bore smoker is back again for all the light-handling, zippy fun. It too gets the new PDS chassis and two-part silencer
2011 KTM Dirt Bike Photo Gallery
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Recent KTM Dirt Bike Reviews
2015 KTM 250 SX-F Factory Edition First Ride
MotoUSA heads off road to see how the swath of improvements to KTM's latest FE model translate to the dirt in this review of the 2015 KTM 250 SX-F Factory Edition.
2015 KTM 450 SX-F Factory Edition First Ride
The 2015 KTM 450 SX-F Factory Edition marks the forth year the Austrian marque has introduced a factory edition of its 450 MX platform. MotoUSA takes a ride.
2015 KTM Freeride 250R First Ride
The 2015 KTM Freeride 250R blends the best of enduro and trials motorcycles for a unique riding experience. MotoUSA hits the dirt in this first ride review.
2014 KTM XCF-W Comparison Review
We put 2014 KTM 250 XCF-W up against 3 other 250cc enduro dirt bikes to see which would be the best. Will the Austrian trail weapon be the best?
2014 KTM 250 SX-F Comparison
The 2014 KTM 250 SX-F continues to impress, and this year it is in the hunt for the win in the MotoUSA 250 Motocross Shootout.
Other Dirt Bike First Looks
2016 KTM XC-W Models First Looks
KTM gives its 2016 XC-W line upgrades aimed at reducing weight and enhancing off-road protection and performance. Also back and better than ever is KTM's genre-bending two-stroke, the Freeride 250 R.
2016 KTM 500 EXC   350 EXC First Looks
KTM updates its popular 500 EXC and 350 EXC dual-sport motorcycles for 2016, reducing weight and offering improved off-road protection.
2016 KTM Motocross SX-F First Looks
KTM reveals complete overhauls of its 2016 MX lineup, with the 450, 350 and 250 SX-F models featuring changes that debuted on the 2015 Factory Editions.

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ocskin -40+ and still stroken it  November 9, 2010 05:04 AM
You keep it going in 2011. Im 40 something and still on 2 stokes, and KTM is keeping it going...right on. Though the 350 sx-f looks interesting and has a great write up, I still enjoy the weight and power from a smaller and less exspensive package. SMALL PACKAGES ARE GOOD
Mx4ever -They are pretty, But..  November 5, 2010 11:40 AM
As an ex ktm rider / Promoter in the middle east, I have to say that ktm bikes are very attractive and they shall be praised for keeping the 2T alive and with great power. But unfortunately in two area they get ruined. Company's management and the bikes reliability. All my ktm bikes suffered from little but disastrous problems like, Sprocket's bolt came loose and just ruined the rear, Shim inside the fork was bent ( From the factory ), Oil leak from the bad O ring of the shifter, Etc... Lack of attention to details you may call it. As for the bad management, I promoted ktm in 2 countries that their rider didn't even know about this company. Many sold their Jap bike and bought ktm. But instead of granting me their dealership in those countries they denied it to me and instead gave it to some illiterate, Crook that can't ride or write something nice about ktm ! He is ruining their name in return. I hope they manage to fix these problems. Oh and Alum frame will be nice too.
tommy gunn -:)  October 29, 2010 05:03 AM
these bikes are amazing :) i want a 250 the are gorgeous :)
powervalve -two strokes  August 10, 2010 12:48 AM
Two strokes are alive and well! Less weight and more power per cc and a lot less $$$ to maintain. Add to that the adjustability of the power valve for different riding conditions........people are starting to see the light!
Smitty........from Durham, CT. -2011 250/300 ....XC-W !!!!  August 6, 2010 05:37 AM
Does the xc-W get all the new stuff (frame, etc) that the XC got for 2011 ?? I know the xc-W got the xc's translucent tank......very cool! Also, does anyone know if the suspension is different for 2011 between the xc and xc-W?? .....how about 2010 for that matter too? I'm making the switch to orange in the spring and am researching all I can since they are a pretty unique brand.
Jake Bulach -KTM DI Bikes are alive!  August 3, 2010 12:25 AM
Trust me, KTM has them, Ive seen them! Just keep your pantys on, they even burn cleaner then a 4 stroke in overall emisions. 2 strokes are the future.

Timmy B, you must be lost, KTM has had more tech. advances in the past 30 years then any Jap company. Yamaha is a close Second.

and people please, winning a shootout? its like comparing green, red, orange, blue, and yellow apples. there the same thing just different flavors. I could ride any of them, just as fast as I am now. Ride safe all.
jeff flick -KTM's had white plastics long before Hondoo!  June 24, 2010 04:34 PM
I have to totally disagree with Tim B. when he said that KTM copied off of Honda with the white rear fender.I don't know how old Timmy B is but I'm 40yrs.old and I remember KTM having white plastics all through the eighties & early nineties so then "Who is copying off of who?"KTM does'nt copy their motorcycles off of any other manufacturer,especially the likes of Honda or any other Japanese brand!
benjamin STEINER -ktm xc 2011  June 14, 2010 02:39 PM
pictures here http://mxtahiti.blogspot.com/2010/06/gamme-ktm-xc-2011.html
Benjamin STEINER -300 XC infos  May 24, 2010 08:29 PM
2011 KTM 250 XC Motocross training one day, aggressive single track the next. It can be done with the KTM XC. Thanks to MX power, specifically tuned tranny gear ratios and suspension settings for cross country racing, XCs are the ultimate do-it-all bike. Just to be sure we didn't leave anything out, we built the brand new XCs with the new generation chassis, milled triple clamps holding WP Suspension elements, Brembo brakes, a transparent polyethylene large capacity fuel tank, sidestand and handguards. NEWS XC MODEL YEAR 2011: New frame and swingarm with new PDS shock New silver EXCEL wheels with zinc/nickel coated spokes New bodywork and airbox Air flow optimized intake boot between air filter and carburetor New two component silencer provides better connection, bigger inner diameter and more torque Noticeable increase in performance Higher torque Better rideability 250/300 XC SPECIFIC FEATURES Newly developed cylinder (lower exhaust port, new timing and optimized exhaust control with new main spring) Increase in overall performance with more torque and improved rideability New exhaust (new shape with bigger diameter at connection pipe) New 6-Speed gearbox (from a 5-speed in 2010)
Saul -300XC 2011  May 22, 2010 06:59 AM
Did anyone seen any pictures of the 300XC yet? Is it like the 250SX or like the EXC models?
Nathan -downside of two strokes  May 20, 2010 02:47 AM
i grew up riding and racing two strokes and after a long break rode a KTM 2 stroke the other day. was far more nimble than the 450's there but the track was wet and muddy and slippery. coming out of corners was a hell of a lot of fun on the 2 stroke but much faster on the 4 stroke
Tim B -And...  May 19, 2010 09:57 PM
I see they stole the white rear fender from Honda. Hehe! I'm not a fan of the stupid black plastic cover over the silencer. Come on KTM. You can do better than that. And there is a lot of space above the cylinder on the 2 stroke. And the tank shrouds are very thin at that point. And for some reason the black plastics (tank?) does not extend down as far on the 2 stroke. But these KTMs looks great nonetheless!
Tim B -KTM  May 19, 2010 09:53 PM
I've never owned a KTM, but I absolutely LOVE them for keeping the 2 smokers alive. Long live the ring dings!!!
Kevin -They have had the 350 for years  May 19, 2010 08:33 PM
KTM wants the 350 because it is light and agile like a 250F but more powerful like a 450. Hello! The 250SX 2-stroke is lighter and more agile than a 250F and it is as powerful as a 450. So put development into DI for 2-strokes and a 250SX will kill the 450F, 250F and 350F. It will be lighter than them all, more powerful than them all, cleaner than them all, cheaper, more fuel efficient, and more reliable. A win win win win win win if they went DI 2-stroke 250.
NO NAME -hmmmm  May 19, 2010 08:19 PM
you forgot to mention the 2011 KTM300 XC-W six speed
x2468 -n/a  May 18, 2010 11:48 PM
Oh I do see the 2-strokes get the 2010 suspension updates. That's still pretty awesome since it seems the system this year was pretty good, finally won a few shootouts. Not as great as getting all the updates right away but better than nothing like the yz250. I'm still hoping they come out with a 2-stroke direct injection so they can make green sticker off-road 2-strokes again.
x2468 -Linkage??? what's next the aluminum frame.  May 18, 2010 11:42 PM
Wow that video was very.... European. Anyway, leave it to KTM to provide us with the mouth watering bare engine shots. Nothing get's me more amped about a new bike than pics like that, and I wouldn't be surprised if the photographer taking those pics also dabbled in porn. But I do have to wonder, almost seems like they're trying to make a 250 2-stroke. I mean that's almost what this is. Less powerful than a 450 and lighter than one too, but more powerful than a 250f.If the 4-strokes had never been doctored into competition by unfair displacement handicaps, would the R&D money and focus that would have went to them produced a 250 2-stroke as good as or better than this 350 through process of natural evolution? That is assuming the bike lives up to it's hype and is an amazing bike, which I'm sure it may be. And forgive me if I sound like just another sobbing 2-stroke fan, I don't mean to put on that impression. But did they say that the 2-stroke MX/SX bikes won't get this wonderful new linkage?? Is that for budget cut reasons or really because the PDS shock actually works better on the 2-stroke? I'm leaning towards the 1st one.
adam - motousa -bad-ass!  May 18, 2010 12:59 PM
i want one of each@!