2013 KTM 350 SX‑F: PERFORMANCE OF A 450
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REVAMPED ENGINE
The advantage of the KTM 350 SX‑F has always been its weight. And now the bike's heart is even lighter. Another 500 g (17.64 oz) and more have been lost thanks to the new die-cast housing. The extremely short-stroked DOHC power unit, equipped with the latest generation of EFI, excels with its even wider rev range and exceedingly efficient rideability. And, just like all KTM four-strokes, it can be activated with an electric-starter.
CYLINDER HEAD
The modifications to the 350 cm³ (21.36 cu in) DOHC engine can be summarized very easily: more power at less weight. Flow-optimized ducts supply greater gas flow and better cylinder charging. Strengthened valve heads and valve seats plus valve springs with a higher spring force make it possible for the lightweight titanium valves to withstand the increase in maximum engine speed from 13,000 rpm to 13,400 rpm. Or more simply said: more power for the new 2013 KTM 350 SX‑F.
CRANKSHAFT
Factory bike or production bike? You'll find no difference in the crankshaft. Just like last season's KTM factory machines, the crankshaft on the new 2013 KTM 350 SX‑F is equipped with a revolutionary plain bearing in the lower conrod eye. In conjunction with the stiffened crankshaft and a lighter piston, this design is a key prerequisite for increasing the maximum engine speed to 13,400 rpm and the impressive peak performance of the 350 cm³ (21.36 cu in) engine. But not everything revolves around pure power. One major benefit is an extension to the service intervals for the crankshaft; a benefit in terms of time and costs.
