2011 KTM SX Model Lineup

Motorcycle.com Staff
by Motorcycle.com Staff
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2011 KTM SX model lineup

KTM 350SX-F highlights 2011 line
By Motorcycle.Com Staff, May. 18, 2010, Photography by Mitterbauer H
KTM has unveiled its 2011 motocross lineup, featuring the new 350SX-F with link rear suspension.

The 350SX-F is the star of KTM s 2011 lineup. Developed by ten-time Motocross World Champion Stefan Everts, the 350SX-F has already made a splash in the FIM World MX1 Championship, with factory rider Tony Cairoli riding the bike to two Grand Prix wins and first overall in the standings.

The 350cc DOHC single-cylinder engine uses a 57.5mm stroke and 88mm bore. According to KTM, the 350SX-F offers the performance of a 450cc MX bike with the handling of a 250cc motorcycle. The KTM 350SX-F also features electronic fuel injection and electric start. The 350SX-F can also be retro-fitted with a kick-starter.

2011 ktm sx model lineup, The KTM 350SX F is said to offer the performance of a 450 but the handling of a 250
The KTM 350SX-F is said to offer the performance of a 450 but the handling of a 250.

The 350SX-F uses a similar chassis to the rest of KTMs 2011 off-road lineup including the 250SX-F and 450SX-F.

The 2011 models get a new lightweight chrome-moly steel frame KTM says offers higher torsional stiffness and reduced longitudinal stiffness than the previous frame while also absorbing the energy from hard rear wheel impacts.

2011 ktm sx model lineup, A stripped down look at the 350SX F Note the linked rear suspension system
A stripped-down look at the 350SX-F. Note the linked rear suspension system.

The 2011 two-stroke SX models will use PDS rear suspension system while the four-stroke SX-F models will use WP linkage rear suspension. According to KTM, the PDS system provides a more linear spring progression than the linkage system, making them a better fit for the two-stroke models. The linkage system has a high spring progression which benefits motocross and supercross conditions. Regardless of PDS or linkage suspension, all 2011 SX models will use a new cast aluminum springarm. Up front, all 2011 SX models will be equipped with 48mm WP upside-down forks.

2011 ktm sx model lineup, KTM has changed the layout of the airbox for 2011 models to better protect against dirt and improve airflow
KTM has changed the layout of the airbox for 2011 models to better protect against dirt and improve airflow.
Four-stroke models will use a new silencer that reduces noise levels to 115 dB. Two-stroke models will use new two-component silencers with an injection-molded plastic holder around the aluminum housing. KTM has also updated the airbox layout to better protect the air filter and maximize airflow.

The KTM 250SX-F receives engine updates for 2011 to take advantage of the updated intake port and exhaust. According to KTM, newly developed cams help improve torque. The 250SX-F will enter serial production with a kick starter but can be retro-fitted with an electric starter. The KTM 450SX-F also receives minor engine updates.

The 2011 models are expected at KTM dealers in June.

For more pictures, check out our photo gallery.

Related Reading
EICMA 2009: KTM 350SX-F introduced
KTM 350SX-F victorious in first competition

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