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- 2012 KTM 250SX
2012 KTM 250SX Review
Pure two-stroke power
More means more the pure two-stroke power of the quarter-liter engine turns the 250 SX into a precision tool with an unbeatable power-to-weight ratio. With the new linkage rear suspension and completely new frame, it now raises the bar even higher for 250cc machines. Never has it been easier to ride onto the podium with a two-stroke against bigger-bore four-strokes.
2012 KTM 250SX Features and Benefits
New for 2012:
» new frame
» new swing arm
» new rear shock
» new front fork (bushings, seals and setting)
» new intake boot (better performance)
» new reed block (smoother power delivery)
New intake snorkel
The flow-optimized intake flange between airbox and carburetor on the 250
SX now ensures even better charging with fresh gas. This results in even freer
revving and even more power in all RPM ranges for the liquid-cooled, two-stroke
The choice between two ignition curves, activated by means of a socket connector,
and the adjustable TVC exhaust controller make it simple for the 250 SX rider
to tune the performance characteristics of the two-stroke engine to his or
her individual requirements.
The technology of a two-stroke engine has indisputable advantages, including
the high power/displacement and low weight. In terms of power-to-weight ratio,
the 250 SX is practically unbeatable. Unrivalled performance and playful handling
are just two of its many strengths.
The completely revamped frame on the 250 SX is made from high-quality chrome-molybdenum steel and is extremely light and torsion-resistant. It is also characterized by a particularly balanced geometry that combines playful handling with razor-sharp precision.
New linkage rear suspension
The two-strokes in the MX range from KTM are now also equipped with the elaborate linkage rear suspension system. Linking the shock absorber via a lever system provides high progressiveness and wide adjustment ranges. The 250 SX therefore has a season ticket for the podium, even on the most brutal motocross tracks.
Apart from the new linkage rear suspension, there is the new cast aluminum swingarm, which is designed for minimum weight while supplying optimum lateral stiffness and defined longitudinal flexibility. This makes a major contribution to the excellent tracking stability of the 250 SX and its precise handling and extreme traction.
New telescopic fork setting
The further improved upside-down telescopic fork incorporating closed-cartridge
technology now ensures even greater punch with a somewhat tauter setting.
At the same time, the WP fork with 48 mm (1.89 in) outer tube diameter bolsters
the playful handling of the 250 SX.
The bodywork of the 250 SX with the very slim seat and radiator shrouds,
plus excellent contact points, perfect the bike's ergonomics, making handling
even simpler and more precise.
2012 KTM 250SX - International Specifications/Technical Details
MSRP Price: See KTM dealer in your country for pricing.
Engine type Single cylinder, 2-stroke
Displacement 249 cc
Bore/stroke 66.4/72 mm
Compression ratio -
Transmission 5 gears
Carburetor Keihin PWK 36S AG
Control Exhaust control TVC
Lubrication Mixture oil lubrication 1:40
Gear ratios 14:28 15:24 18:24 21:24 22:21 -
Primary ratio 26:72
Final drive 13:48
Cooling Liquid cooling
Clutch Wet multi-disc clutch, Brembo hydraulics
Frame Central double-cradle-type 25CrMo4
Handlebar Renthal, Aluminium Ø 28/22 mm
Front suspension WP-USD, Closed Cartridge, Ø 48 mm
Rear suspension WP-Monoshock with linkage
Suspension travel front/rear 300/330 mm
Front/rear brakes Disc brake 260/220 mm
Front/rear rims 1.60 x 21"; 2.15 x 19" Excel
Front/rear tires 80/100-21"; 110/90-19"
Chain 5/8 x 1/4"
Steering head angle 63.5°
Wheel base 1,495 ± 10 mm
Ground clearance 385 mm
Seat height 992 mm
Tank capacity, approx. 7.5 l
Weight, without fuel, approx. 96.3 kg
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