KTM has announced more details on its new fuel-injected two-stroke off-road bikes.
Originally announced back in March, KTM’s fuel-injected two-strokes are firsts in the motorcycle world, although there have been other vehicles (personal watercraft, snowmobiles) sporting this technology in recent years.
There are two bikes with the new technology, a 250 and a 300 (North America will get the KTM 250 XC-W TPI). Both versions of the engine get KTM’s Transfer Port Injection, which works in a similar way to EFI on four strokes. At its most basic form, it’s just an injector spraying fuel into the intake, except that there’s a second injector in the throttle body that mixes two-stroke oil with the gasoline.
KTM says the new engine uses an 80:1 fuel-oil ratio; most modern two-strokes with carburetors have around a 40:1 fuel-oil ratio, so the new KTM technology significantly reduces the amount of tailpipe emissions. There are plenty of worn-out four-stroke thumpers that are burning more oil than that …
As said before, these bikes are off-road only, and KTM has made no announcements of street-legal versions. For now, don’t consider these machines a harbinger of a return to the glory days of two-smoke street screamers. If you want that sort of performance, you’d best keep looking for an RD350 or NSR250, at least for now.
Both the 300 and 250 versions of this bike use the same chrome-moly double-cradle frame, and weigh 103 kg.
Except for engine capacity, they are exactly the same, also sharing WP Xplor adjustable suspension and Brembo brakes. They are supposed to start shipping to dealers in June; no Canadian pricing has been announced at this time.