When it comes to motocross bikes, KTM offers a full breadth of some of the most powerful bikes on the market, including the spectacular KTM 450 SX-F.

The 450 SX-F’s high-quality chassis allows advanced riders to convert the brutal power of the brand’s innovative DOHC four-stroke engine into controllable traction, even on the toughest MX tracks. Add that to a newly-developed clutch and a robust steel cage, and you have a motocross bike that’s truly the class of the field. Especially when you throw in the transmission-friendly back-damping that makes use of a spring washer for the first time instead of the customary conical springs, substantially reducing the operating force.

Adding to the bike’s unbridled versatility and all-around functionality is a new technology for the exhaust. In conjunction with the innovative HPRS (Header Pipe Resonator System) and large-diameter silencer, the 450 SX-F’s super-light titanium exhaust manifold ensures plenty of power at low noise levels.

In terms of its design, the 450 SX-F was built to compete, featuring a state-of-the-art frame that’s made from high-quality chrome-molybdenum steel. The bike’s bodywork is extremely slim, making for a dynamic ride that’s characterized by a particularly balanced geometry that combines easy handling with razor-sharp precision.

Handling and ride ability are always chief requirements for world-class motocross riders. On both those fronts, the KTM 450 SX-F is in a true class of its own, making it an ideal choice for riders looking to make a name for themselves in the motocross world.

Find out more about the KTM 450 SX-F after the jump.

  • 2012 KTM 450 SX-F
  • Year:
  • Make:
  • Model:
  • Engine:
    1-cylinder, 4-stroke, DOHC, 4-valve
  • Transmission:
    5-speed, claw shifted
  • Displacement:
    449 L
  • Price:


2012 KTM 450 SX-F Drivetrain
- image 435216

The 450 SX-F’s sensational, state-of-the-art four-stroke single-cylinder engine, featuring twin overhead camshafts and four valves actuated by means of cam levers, excels with an extremely wide usable rev range and immense torque coupled with unrivalled performance.


2012 KTM 450 SX-F High Resolution Exterior
- image 435218

The 450 SX-F’s state-of-the-art frame made from high-quality chrome-molybdenum steel is not only extremely light and torsion-resistant. It is also characterised by a particularly balanced geometry that combines easy handling with razor-sharp precision.


2012 KTM 450 SX-F Exterior
- image 435212

The 450 SX-F’s bodywork with the very slim seat and spoiler lines, plus excellent contact points, perfects the bike’s ergonomics, making handling even simpler and more precise.

Electric Starter

2012 KTM 450 SX-F High Resolution Exterior Wallpaper quality
- image 435209

Years ago, KTM proved that an electric starter is very advantageous even in the tough sport of motocross. That’s why the 450 SX-F can also be started at the press of a button.


2012 KTM 450 SX-F High Resolution Exterior
- image 435211
Design Single-cylinder, 4-stroke, spark-ignition engine, liquid-cooled
Displacement 449.3 cm³ (27.418 cu in)
Bore 97 mm (3.82 in)
Stroke 60.8 mm (2.394 in)
Starting aid Electric starter
Engine lubrication Forced oil lubrication with 3 Eaton pumps
Primary gear ratio 29:74
Final drive 14:52
Cooling system Liquid cooling system, continuous circulation of cooling liquid with water pump
Clutch Wet multi-disc clutch / hydraulically operated
Ignition system Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment
Frame Central tube frame made of chrome molybdenum steel tubing
Forks WP Suspension Up Side Down 4860 MXMA CC
Shock absorber WP Suspension 5018 BAVP DCC
Suspension travel Front 300 mm (11.81 in)
Suspension travel Rear 330 mm (12.99 in)
Brake system Disc brakes, brake calipers on floating bearings
Brake discs - diameter Front 260 mm (10.24 in)
Brake discs - diameter Rear 220 mm (8.66 in)
Chain 5/8 x 1/4"
Steering head angle 63.5°
Wheelbase 1,495±10 mm (58.86±0.39 in)
Ground clearance unloaded 371 mm (14.61 in)
Seat height unloaded 992 mm (39.06 in)
Total fuel tank capacity approx. 7.5 l (1.98 US gal)
Unleaded premium fuel (95 RON)
Weight without fuel, approx. 107.8 kg (237.7 lb.)


Motorcycle-USA----"The calibration of the suspension is better than last year, but the bike still has a propensity to pitch more aggressively than some of the other bikes. It’s not that the suspension or handling is bad; it just didn’t impress us in the same way as the other bikes hence receiving low scores in the suspension, handling and ergonomics categories. "

Kirby Garlitos
Automotive Aftermarket Expert - kirby@topspeed.com
Kirby’s first exposure into the world of automobiles happened when he caught Knight Rider on television as a five-year old boy. David Hasselhoff didn’t leave much of an impression on him (that happened later on in Baywatch), but KITT certainly did. To this day, Kirby remains convinced that he will one day own a car with the same ‘spirit’ as the original KITT (not the 2008 monstrosity). He doesn't know when that will be, but until then, he’s committed to expressing his love for KITT, and all cars for that matter, here at TopSpeed.  Read More
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