2011 KTM 250 SX (discontinued)

Average User Rating: (Excellent)
2011 KTM 250 SX
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Great bike

The Good:

Great suspension, awesome engine, super sweet design

The Bad:

the rims suck! very weird handlebar bend

Overall Review:

I love this bike, ride 450s for e few years, then bought this bike, and suddenly i remembered how much fun motocross used to be.


Product KTM 250 SX
Model Year 2011
Engine Size 250cc
Engine Type Two-Stroke
Engine Displacement
Bore x Stroke
Compression Ratio
Fuel System
Final Drive
Suspension Front
Suspension Rear
Brakes Front
Brakes Rear
Tires Front
Tires Rear
Overall Length
Overall Width
Overall Height
Seat Height
Ground Clearance
Fuel Capacity
Curb Weight

For years KTM has committed to the development of 2-stroke engines which are an advantage against 4-strokes in many aspects. With an unbeatable power-to-weight ratio, lower cost of acquisition and easy to maintain and service – there is no better choice than a two-stroke.

New MY 2011:
- New chassis (PDS)
- New airbox
- Air flow optimized intake boot between filter and carburetor
- New exhaust (new shape with bigger diameter at connection pipe)
- New two component rear silencer (better connection and bigger inner diameter)
- Newly developed cylinder (lower exhaust port, new timing and optimized exhaust control)
- Noticeable increase in power performance
- Higher torque
- Better rideability


Engine Type: Single cylinder, 2-stroke
Displacement: 249 cc
Bore x Stroke: 66.4 x 72 mm (2.61 x 2.83")
Starter: Kickstarter
Transmission: 5 gears
Carburetor: Keihin PWK 36S AG
Control: TVC power valve
Lubrication: Mixture oil lubrication 1:60
Transmission Oil: Motorex, SAE 15W50
Primary Drive: 26:72
Final Drive: 13:48
Cooling: Liquid cooling
Clutch: Wet multi-disc clutch, operated hydraulically
Ignition: Kokusan


Frame: Central double-cradle-type 25CrMo4
Subframe: Aluminium
Handlebar: Renthal, Aluminium Ø 28/22 mm (1.10/0.87")
Front Suspension: WP USD Ø 48 mm (1.89")
Rear Suspension: WP PDS shock absorber
Suspension travel front/rear: 300/335 mm (11.81/13.19")
Brakes, front/rear: Disc brakes 260/220 mm (10.24/8.66")
Rims, front/rear: 1.60 x 21"; 2.15 x 19" Excel
Tires, front/rear: 80/100-21"; 110/90-19"
Chain: 5/8 x 1/4"
Main silencer: Aluminium
Steering head angle: 63.5°
Wheelbase: 1475±10 mm (58.07 ± 0.39")
Ground clearance (unloaded): 385 mm (15.16")
Seat height: 985 mm (38.78")
Tank capacity: approx. 8 liters (2.11 gal)
Weight (no fuel): approx. 95.4 kg (208 lbs)

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