2008 ES Ktm's.

Fearnot · #1 (**permalink**) 10-08-2007

Two strokes

The big news on the two-stroke side is the electric start. It works wonderfully, probably even better than it does on the four-stroke models. The starter is located lengthwise at the base of the cylinder on the left side of the motor. It's encased in a hard plastic, removable shell, which integrates well with the case design.

KTM 250 XCWOf course, the first thing most riders ask about when they hear that electric start has been added to a bike is how much weight it brings with it. The answer: Compared to the 2007 versions, none. The 250XC-We and 300XC-We are almost two pounds lighter than last year's models.

Several changes were made to the powerplants on all the two-strokes, as well. All the motors got reduced intake tract volume and a new center case shape that allows for increased flow and, therefore, better throttle response.

The CDIs on all the bikes, four-strokes included, have two ignition curves. One is designed for more aggressive power, the other for a smoother power delivery. Changing from one curve to the other is as simple as unplugging a wire that sits just in front of the fuel tank on the right side of the frame (although it seems like it would have been easy enough for KTM to wire up a switch from the factory).

Exclusive to the 250 and 300XC-We models is a lighter connecting rod designed to reduce vibration and better lubricate the top-end bearing, while the bigger-bore two strokes get a new powervalve design.

KTM 300 XC-WeThe 300XC-We also benefits from a smaller cylinder design that had already been incorporated onto the 250. One thing KTM reps say they have learned from the new generation of four-strokes is how to cool a cylinder better. The secret is increasing the surface area of the water jacket. With a larger surface area, the same cooling effect can be achieved with less width. Combined with a different water pump design that fully exploits the narrower coolant passages, the result is a more compact, more efficient cooling system.

All the two-strokes hold 2.9 gallons (11 liters) of fuel.

Source: www.amadirectlink.com
Electric start on a two stroke woods machine would have some definate uses around my neck of the woods. KTM seems to done their homework for 08 and even branched into making ATV's although they are 4 stroke variety. Sorry if this thread has been done before in some shape or form.

ky 2stroker · #2 (**permalink**) 10-08-2007

sweet, I guess ktm is the shit when it comes to new 2 stroke technology.

honda86 · #3 (**permalink**) 10-08-2007

KTM is one of the few companys that will still update 2 strokes...all 2 stroke guys should support KTM and then maybe the others will open their eyes. Not to change subjects but has anyone rode the new KTM 144?? i heard its one bad bike! Does anyone have a dyno of the 144?

QuadraceYA · #4 (**permalink**) 10-08-2007

maybe one day they will make a 2-stroke quad ........ yeah right.

SAVAGE420 · #5 (**permalink**) 10-10-2007

Ski-doo is at the top of the 2 stroke chain look at how hi tech there 1000R SDI motors are.

KTM's are great as hell also but they don't make the giant injection pingers.

iluvmyCR · #6 (**permalink**) 10-12-2007

i hanvt rode the 144 but the 250sx is blazing fast, i am impressed with all the stuff it comes with, like the rims, excel i beleive, anyone kno if the pipes are aftermarket also?

ROACHIE · #7 (**permalink**) 10-12-2007

the ktm comes with v-force 3 reeds,fmf factory pipe and aluminum fmf silencer, excel rims, adjustable cdi ignition with 2 settings smooth and race, and the 250sx comes with this nifty little powervalve adjuster where you put different springs in the engine to gain more power or make it have less power...if you want one hell of a bike id suggest any ktm cause even the 4-strokes are superior to any jap. bike...they have the least restricted engines and on their new 525 quad it puts out a whopping 53 h.p stock...but with a 8,900$ price tag a lot of them wont be bought but if u look at it this way it comes race ready with ohlins gas shocks with 11 inches of travel all around, tether kill switch, adjustable cdi, razr tires, adjustable rear axle, raised lower a-arms, hydraulic clutch, aluminum racing exhaust, and a lot of other goodies i cant think of right now...but ktm is way ahead of anything else out there 2 and 4 stroke i would definately invest in a ktm because if u think about it you buy a crappy jap. bike and put lots of money into it setting it up for racing and ktm's come stock mx ready and btw their suspension doesnt suck and it never did...