The KTM 50 SX motorcycle specifications include a 49 cc (2.99 cu in) engine and a listed weight of 38.8 kg (85.5 lb).
Key specifications
2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2021, 2022, 2023Model years
49 ccDisplacement
38.8 kgDry weight
650 mmSeat height
1.8 LFuel tank
1,030 mmWheelbase
255 mmGround clearance
Model years covered
20062007200820092010201120122013201420152016201720182019202120222023
Year-specific specification changes
The 2006 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
Dry weight
2009201139.8 kg (87.7 lb)
2012201341.5 kg (91.5 lb)
2014201539.8 kg (87.7 lb)
2016202341.5 kg (91.5 lb)
Frame
2008Double grinded central double-cradle-type frame
2009Double grinded central double-cradle-type frame. Steel subframe.
2010Double grinded central double-cradle-type frame
2011Double grinded central double-cradle-type frame. Subframe: Steel.
20122015Central tube frame of chrome molybdenum steel tubing, powder-coated
20162019Central-tube frame with double-cradle
202125CrMo4 steel central-tube frame
20222023Central-tube frame with double-cradle
Front brakes
20082010Single disc. Bremo
2012Single disc. Four-pot brake caliper
20132019Single disc. Four-piston calipers.
Front suspension
2007Marzocchi, 23 mm
2008Marzocchi Ø 32 mm (1.26
2009Marzocchi, 32 mm
2010Marzocchi Ø 32 mm (1.26
2011Marzocchi 32 mm (1.26 in)
20122015WP Suspension USD 35
20162019WP upside-down Ø 35 mm
20212023XACT 35 WP Upside-Down fork, Ø 35 mm
Fuel system
20152016Carburettor
20172019Carburettor. Mikuni TMX
2023Carburettor
Rear brakes
20082010Single disc. Bremo
2012Single disc. Two-pot brake caliper
20132019Single disc. Two-piston calipers.
Rear suspension
20102011WP mono shock
20122015WP Suspension 3614 BAEM
20162019WP shock absorber
20212022XACT WP mono shock
2023XACT WP PDS mono shock
Wheelbase
201020191,032 mm (40.6 inches)
Clutch
2009Centrifugal clutch
201220153-lining automatic clutch on the main shaft / centrifugal force
20172019Centrifugal clutch
20212023Centrifugal
Exhaust system
2007Aluminium
20092012Aluminium
Fuel capacity
200920232.30 L (0.61 US gal)
Ground clearance
20102023252 mm (9.9 inches)
Ignition
20072009Seletra analogue
20102012Seletra 2p D36
20132015SELETTRA 2p D36
20162019Seletra 2p D36
20222023Seletra 2p D36 EMS
Lubrication
20070,15 – 0,2 l Motorex ATF Super
20082009Mixture lubrication 1:60
20102012Mixture oil lubrication 1:60
20132019Mixture oil lubrication
Engine specifications
| Engine type | Single cylinder, two-stroke |
|---|---|
| Displacement | 49 cc (2.99 cu in) |
| Bore × stroke | 39.5 x 40 mm (1.6 x 1.6 inches) |
| Cooling system | Liquid |
| Fuel system | Carburettor. Dell´Orto PHBG 19 BS |
| Ignition | Seletra analog |
| Starter | Kick |
| Lubrication | 0,15- 0,2 l Motorex ATF Super |
Transmission and drivetrain
| Clutch | Centrifugal clutch (adjustable) |
|---|
Chassis and suspension
| Frame | Central double-cradle-type frame |
|---|---|
| Front suspension | Marzocchi 32 mm (1.26 inches) |
| Rear suspension | WP monoshock |
| Rake | 24.0° |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
Dimensions and weight
| Dry weight | 38.8 kg (85.5 lb) |
|---|---|
| Seat height | 650 mm (25.6 inches) |
| Wheelbase | 1,030 mm (40.6 inches) |
| Ground clearance | 255 mm (10.0 inches) |
Fuel and emissions
| Fuel capacity | 1.80 L (0.48 US gal) |
|---|
Other specifications
| Exhaust system | Aluminum |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from KTM models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official KTM information before relying on them. Visit the official KTM website.