Key performance
Technical specifications
Engine
- Displacement
- 249 cc
- Engine type
- Single cylinder, four-stroke
- Cooling
- Liquid
- Compression ratio
- 13.2:1
- Bore × stroke
- 76.0 x 54.8 mm (3.0 x 2.2 inches)
- Valves/cylinder
- 4
- Camshafts
- 2 ACT
- Fuel system
- Injection Ø 42 mm
- Lubrication
- Forced oil lubrication with 2 Eaton pumps
- Ignition
- Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan
- Starter
- Electric
Chassis
- Frame
- Central tube frame made of chrome molybdenum steel tubing
- Gearbox
- 6-speed
- Final drive
- Chain (final drive)
- Clutch
- Wet multi-disc clutch / hydraulically operated
- Front suspension
- WP Suspension Up Side Down 4860 MXMA CC
- Rear suspension
- WP Suspension 5018 BAVP DCC
- Front wheel travel
- 300 mm (11.8 inches)
- Rear wheel travel
- 330 mm (13.0 inches)
Brakes
- Front brakes
- Single disc
- Rear brakes
- Single disc
- Front tyre
- 80/100-21
- Rear tyre
- 100/90-19
Dimensions
- Seat height
- 992.00 mm
- Wheelbase
- 1495.00 mm
- Ground clearance
- 375.00 mm
- Fuel capacity
- 7.50 L
- Dry weight
- 103.40 kg
- New price
- 8 090 €
Overview
Three consecutive MX2 titles, including the one clinched with Marvin Musquin in the saddle. When a motorcycle wins that much, you might expect the Austrian firm to ease up on development. The exact opposite happened with this 2012 KTM 250 SX-F, which arrives on the starting line with a reworked chassis and, a significant new feature, an electric starter as standard equipment. Among the Japanese rivals — Yamaha YZ250F, Honda CRF250R, Kawasaki KX250F leading the pack — this technical detail is being watched closely, as it changes the game in real-world conditions.

The 248.6 cc DOHC engine embodies the KTM philosophy on its own. Four titanium valves, carbon fiber finger followers, ultra-lightweight piston, short stroke at 54.8 mm for a bore of 76 mm. This ratio favors high rpm, and the engine holds up to 13,400 rpm without flinching. The Keihin injection manages all of this with an optional mapping selector that allows the engine's character to be adapted to the terrain or the rider's level. For a machine tipping the scales at 103.4 kg dry, this is a serious package, and enthusiasts hunting a used ktm 250 sx-f looking for a defining model year often have their eyes on this 2012 generation, which laid the foundations for everything that followed through to the ktm 250 sx-f 2018, the ktm 250 sx f 2021, and even the ktm 250 sx-f 2023.
The chrome-molybdenum steel frame is more than a marketing argument. With a wheelbase of 1,495 mm and ground clearance of 375 mm, the machine settles naturally into lines without ever giving the impression of fighting its rider. The 48 mm inverted WP fork, equipped with a closed cartridge, works in conjunction with a linkage-adjustable rear shock. Settings can be fine-tuned to suit your build and riding style. This is not a motorcycle that forgives approximation, but it rewards technical investment.
The high seat at 992 mm places this ktm 250 sx-f squarely in the pure competition class. It is not a machine for beginners, despite the soft mapping available as an option. It targets seasoned club riders and motocross track enthusiasts who want a motorcycle directly derived from the world championship. At €8,090 on the price list, it sits at the top end of the category, but the performance justifies the premium over the Japanese alternatives. Those searching for a used ktm 250 sx f from this generation, or comparing prices of a ktm 250 sx f 2019 against those of the ktm 250 sx f 2022, will find a robust engine provided it is properly maintained, as the service intervals are tight on a motor that runs at high revs.
The electric starter deserves a special mention. Not because it is indispensable on the circuit, but because it demonstrates a level of technical maturity that Japanese manufacturers had not yet integrated into their motocross machines at the time. KTM even offers the option to remove it to shed a few grams if the rider prefers to return to the kickstarter. It is the kind of pragmatic detail that has characterized the Austrian approach for years, and explains why this 250 SX-F lineage has endured across generations — from the ktm 250 sx-f 2010 through to the Factory Edition variants — consistently remaining a benchmark in its category.
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