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2012 KTM 450SX
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2012 KTM 525XC ATV
2012 KTM 525XC ATV

2012 KTM 450SX
2012 KTM 450SX

2012 KTM 450SX
2012 KTM 450SX

2012 KTM 450SX
2012 KTM 450SX

– 2012 KTM 450SX Review

2012 KTM 450SX


Where do you want to go today? If it’s the podium, the 450 SX is the perfect choice – because with this ATV, you are already ahead of the competition. Only the best components are good enough for this SX stalwart. The fast-accelerating KTM engine, proven in countless championships, gives you an advantage the second the gate drops. Lap by lap, you show the opposition their limits. Optimum handling, unbeatable power and your ability are the formula for the championships and all the glory.



2012 KTM 450SX Features and Benefits


KTM engineers have packed innovative technology into this compact, lightweight racing powerhouse. The electric starter sets in motion the ultra-powerful DOHC engine, designed to give the best motocross riders from beginners to professionals an advantage. With a 5-gear transmission designed specifically for SX use and optimal power delivery throughout the powerband, the 450 SX roosts the competition. It is the ideal secret weapon for hard wheel-to-wheel racing and won’t disappoint you when the pressure is on.


Two overhead camshafts and DLC-coated rocker arms drive the four ultra-light titanium valves to the highest levels of performance. What results, is smooth, unbeatable power from the bottom end of the power range to the rev limiter. The 450 SX engine produces phenomenal performance thanks to state of the art components and technology.


Due to specially engineered crankshaft and flywheel both SX engines guarantee enormous acceleration and power from the bottom of the range up. The two lightweight balancing shafts provide smooth engine character for less rider fatigue over long motos.


The crankshaft is connected via a sprocket to a short control chain that drives the two camshafts. Here, a self-adjusting hydraulic chain tensioner ensures reliable valve control right up into the highest speed ranges.

2012 KTM 450SX – North American Specifications / Technical Details
US MSRP: See dealer for pricing

Engine type Single cylinder, 4-stroke, SOHC, 4-Valve, Liquid Cooled
Displacement 510.4cc
Bore/stroke 97/60.8mm
Starter electric starter / 4 Ah
Carburetor Keihin MX FCR 41
Control 4 V / DOHC with cam levers, drive via helical gear pair and tooth-wheel chain
Lubrication pressure lubrication with 2 Eaton pumps
Transmission 5-speed SX Close-ratio (No reverse)
Gear ratios 16:34 19:31 20:26 23:25 26:24
Primary ratio 26:78
Final drive 14:38
Cooling Liquid cooling
Clutch wet multi-disc clutch, operated hydraulically
Ignition Kokusan digital 4K-3B

Frame chromoly (25 CrMo4)
Subframe aluminum
Handlebar Magura tapered aluminum, Ø 28mm
Front suspension Ohlins fully adjustable, Twin Chromoly A-arms
Rear suspension Ohlins PDS Mono-shock, Fully Adjustable, Chromoly Swingarm
Suspension travel front/rear 244/258mm / 9.61″/10.16″
Front brake 180mm/7.08″ Floating Wave disc, 4-piston fixed Caliper X 2
Rear brake 200mm/7.87″ disc, Single piston Floating Caliper
Front/rear rims 5.0″ X 10.0″ DWT Al 6061/ 8.0″ X 9.0″ DWT Al 6061;
Front/rear tires 20″ X 6.00″ – 10″ / 18″ X 10.00″ – 8″ MAXXIS Razor;
Chain 520 X-ring chain 5/8 x 1/4″
Silencer aluminum SX w/Spark Arrestor
Steering head angle NA
Wheel base 1280mm/50.39″
Ground clearance 265mm/10.43″
Seat height 795mm/31.3″
Tank capacity approx. 10.3 liters/2.72 U.S. gallons
Weight (ready to race) approx. 165 kgs/363.76 lbs

2012 KTM 450SX – European Specifications / Technical Details

Model Not available

Specifications, appearance, and price of product are subject to change without notice.