KTM 450 SX Racing Specs (Top Speed | Horsepower | Weight)

The KTM 450 SX Racing motorcycle specifications include a 449.4 cc (27.42 cu in) engine, a 4-speed gearbox, and a listed weight of 104.1 kg (229.5 lb).

Key specifications

2003-2005Model years
449 ccDisplacement
104.1 kgDry weight
925 mmSeat height
7 LFuel tank
1,481 mmWheelbase
380 mmGround clearance
Model years covered
200320042005
Year-specific specification changes

The 2003 model is treated as the standard specification. Only later model years with a different supplied value are shown below.

Dry weight
2004104.9 kg (231.3 lb)
2005105.2 kg (231.9 lb)
Fuel system
2005Carburettor. Keihin MX FCR 41
Ground clearance
2005385 mm (15.2 inches)

How the KTM 450 SX Racing compares

This compares the motorcycle with all KTM models in this specifications database. The blue marker is this model and the grey line is the KTM database average.

Displacement449 cc
Low 49 ccAverage 444 ccHigh 1,301 cc

Very close to the KTM database average. Around the 63rd percentile across KTM models.

Seat height925 mm
Low 607 mmAverage 895 mmHigh 992 mm

Very close to the KTM database average. Around the 57th percentile across KTM models.

Fuel capacity7 L
Low 2 LAverage 10.6 LHigh 23 L

About 34% smaller than the KTM database average. Around the 17th percentile across KTM models.

This model KTM database average

KTM database percentile rankings

Percentiles show where this motorcycle sits across the KTM specifications database. They are descriptive database rankings, not performance ratings.

Displacement63rd

449 cc — larger displacement than about 63% of KTM models.

Seat height57th

925 mm — taller than about 57% of KTM models.

Fuel capacity17th

7 L — larger than about 17% of KTM fuel tanks in this database.

Dimensions compared with KTM average

Each measurement is compared with the average value across KTM models where that dimension is available.

Wheelbase1,481 mm
This bike

1,481

KTM avg

1,436

3% above average.

Seat height925 mm
This bike

925

KTM avg

895

3% above average.

Ground clearance380 mm
This bike

380

KTM avg

304

25% above average.

Mechanical overview

Engine layout snapshot

Single cylinder, four-stroke • 449 cc • Liquid cooled
Chassis snapshot

Wheelbase 1,481 mmSeat 925 mmClearance 380 mm
4-speed • Chain (final drive) • 80/100-21 front / 110/90-19 rear

Additional useful specifications

Front tire size 80/100-21
Rear tire size 110/90-19
Front tire width 80 mm
Front tire aspect ratio 100%
Front rim diameter 21 in
Rear tire width 110 mm
Rear tire aspect ratio 90%
Rear rim diameter 19 in
Bore/stroke ratio 1.50:1 (Oversquare)

Model information

Category Cross / motocross

Engine specifications

Engine type Single cylinder, four-stroke
Displacement 449.4 cc (27.42 cu in)
Bore × stroke 95.0 x 63.4 mm (3.7 x 2.5 inches)
Cooling system Liquid
Fuel system Carburettor

Transmission and drivetrain

Gearbox 4-speed
Final drive Chain (final drive)

Chassis and suspension

Front wheel travel 300 mm (11.8 inches)
Rear wheel travel 335 mm (13.2 inches)

Brakes, wheels and tires

Front brakes Single disc
Rear brakes Single disc
Front tire 80/100-21
Rear tire 110/90-19

Dimensions and weight

Dry weight 104.1 kg (229.5 lb)
Seat height 925 mm (36.4 inches)
Wheelbase 1,481 mm (58.3 inches)
Ground clearance 380 mm (15.0 inches)

Fuel and emissions

Fuel capacity 7.00 L (1.85 US gal)

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.