KTM 2011 Off-Road Bikes Arrive in June

2011 Models
KTM introduces its 2011 off-road lineup to dealerships in June, meeting the anticipation created by the 350 SX-F thanks to a win by Jagermeister KTM rider Mike Alessi at the opening round of the Lucas Oil AMA Pro Motocross Championship at the Hangtown Classic.
While some may be been skeptical that a 350 can run with 450s, the 350 SX-F earned 4-1 moto finishes with Alessi aboard, placing him second overall. The 350 SX-F was also the first-ever 350cc cycle in the MX1 World Championship, where Antonio "Tony" Cairoli won the premier race.
The new-size four-stroke--recalling the early years of two-strokes in motocross when open bikes were often 351cc--was developed by ten-time MX World Champion Stefan Everts, with the goal offering the performance of a 450cc with the agility of a 250cc MX bike.
The 350 SX-F, along with every other SX-F model, features linked rear suspension system, rather than the linkage-less shock PDS suspension associated with KTM. The 2011 two-stroke (SX) models still retain PDS.
The 350 SX-F also features a Keihin fuel injection system with a 42mm throttle body and a Keihin engine management system, and an electric start, although the bike can be retrofitted with a kickstarter.
The 350 SX-F is one of six MX models for 2011: the SX (two-stroke) models, the 125 SX, the 150 SX and 250 SX, and the SX-F (four stroke) models, the 250 SX-F, the 350 SX-F and the 450 SX-F.
As for the SX-F models, the 250 and 350 have the new fuel injection, but the 450 retains the 41mm Keihin carburetor. All SX-F models also get 48mm WP fork up front.
Both the SX and SX-F models have redesigned, stiffer framework, with the only differences arriving from the PDS vs. the linked suspension mounting holes.
As for the two-stroke SX models, all will retain PDS suspension and Keihin carburetors. The 150 and 250 SX models also have the following upgrades:
> New cylinder with improved casting
> New exhaust pipe with increased wall thickness for more resistance against damage
> New radiator cap for better heat stability
> Entirely new KTM-patented triple-clamp design that includes a 22mm fixed off-set and overall design improvements for improved flex characteristics and optimal handling.
> Modified air box with a new shape that helps reduce dirt and water collection and new TwinAir filter
> New brake pads for more progressive feel
> New Renthal Diamond handgrips
The 150 SX transmission also received a reinforced 1st gear for durability, and the frame is redesigned with a steeper steering head angle for easier cornering and a better feeling in the front end.