2012 KTM 350 SXF Specs eHow

24 May 2015 | Author: | Comments Off on 2012 KTM 350 SXF Specs eHow
KTM 350 SX-F

Motorcycle Basics

KTM first released the all-new 350 SX-F to consumers in 2010 as a 2011 model, and incorporated yearly improvements to the engine and chassis thereafter. For 2012, the Austrian manufacturer tweaked the 350’s one-of-a-kind powerplant for modest power gains, modified the suspension settings for a tighter, more balanced feel and swapped out the Bridgestone tires for a pair of Dunlops.

KTM’s midsize motorcycle shared many of its chassis components with its heftier and more traditional older brother, the 450 SX-F, which competed in the same class. Of course, the 350 SX-F faced staunch competition from the other heavier but more powerful incumbents of the 450 cc motocross class, such as the Yamaha YZ450F, Honda CRF450R and Kawasaki KX450F.


A single-cylinder, four-stroke engine with dual overhead cams, a liquid cooling system and a pair of Eaton oil pumps provided the 350 SX-F with a maximum of 37.9 horsepower at 9,600 rpm and 22.4 foot-pounds of torque at 8200 rpm. It had a 3.5-inch bore and a 2.3-inch stroke that displaced 21.3 cubic inches or 349.7 cc. While the 450 SX-F still used a carburetor, KTM engineers incorporated electronic fuel injection into the 350’s powerplant to cut weight.

For 2012, the engineers altered the fuel mapping to provide a more lean mixture across the powerband, advanced the ignition timing slightly and fitted a new, less voluminous air boot. As a result, the 2012 model boasted about 1.65 horsepower more than the previous year’s model, but the 350 SX-F still was far behind the pack of 450s. The 450 SX-F sported 42.1 peak horsepower, and Honda’s offering had 42.3.

Drivetrain and Chassis

A five-speed gearbox linked by a chain and controlled by a hydraulic, multi-disc clutch routed power from the 350 SX-F’s engine to its rear Dunlop tire. To hold everything together, KTM engineered a strong but lightweight, steel-alloy frame that contained molybdenum and chromium. The Austrian bikemaker used WP Suspension’s 4860 MXMA closed-cartridge fork, which provided 11.8 inches of front-end travel.

A dual compression control system, which also was manufactured by WP under the name 5018 BAVP, gave the rear end 13.0 inches of vertical travel. The 350 SX-F pulled its stopping power from the same single-disc Brembo braking system employed by the 450 SX-F, with a 10.2-inch front disc and an 8.7-inch rear disc.

Performance and Consumer Data

But buyers didn’t flock to the 350 SF-X in search of power. Rather, they bought it for its prowess in the bumps and corners, and maybe also for its price. With a price tag that started at $8,499, it cost less than the $8,799 450 SF-X and barely more than both the $8,440 Honda CRF450R and the $8,399 Kawasaki KX450F.

Nowadays, the National Automobile Dealers Association values used 2012 KTM 350 SX-F bikes at an average retail price of $7,180.

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