KTM 450 SX Racing - Specifications & Review

450 SX Racing

Article Complete Info

Articleid545760
CategoryCross-motocross
MakeKTM
Model450 SX Racing
Year2005

Chassis, Suspension, Brakes & Wheels

Frametypechromium molybdenum
FrontbrakesSingle disc
Frontbrakesdiameter216 mm (8.5 inches)
FrontsuspensionWP-USD 48 mm (1.89 inch)
Rake26.5°
RearbrakesSingle disc
Rearbrakesdiameter260 mm (10.2 inches)
RearsuspensionWP-PDS shock absorber
Rearwheeltravel335 mm (13.2 inches)
Trail112 mm (4.4 inches)

Engine & Transmission

Borexstroke95.0 x 63.4 mm (3.7 x 2.5 inches)
ClutchWet multi-disc clutch, operated hydraulically
Compression12.0:1
CoolingsystemLiquid
Displacement449.40 ccm (27.42 cubic inches)
EnginedetailsSingle cylinder, four-stroke
FuelsystemCarburettor. Keihin MX FCR 41
Gearbox4-speed
IgnitionKokusan digital 4K-3A
LubricationsystemPressure lubrication with 2 Eaton pumps
TransmissiontypefinaldriveChain

Other Specifications

StarterKick

Physical Measures & Capacities

Dryweight105.2 kg (231.9 pounds)
Fuelcapacity7.00 litres (1.85 gallons)
Groundclearance385 mm (15.2 inches)
Overallwidth450 mm (17.7 inches)
Seatheight925 mm (36.4 inches) If adjustable, lowest setting.

About KTM

Country of Origin: Austria
Founder: Hans Trunkenpolz (later joined by Ernst Kronreif)
Best Known For: Off-road/enduro supremacy, Dakar wins, Duke/RC streetbikes, and READY TO RACE ethos

Company History

KTM evolved from a postwar repair shop into a racing juggernaut by treating competition as R&D. Lightweight two-strokes made the brand a force in motocross and enduro; later four-strokes and advanced electronics cemented dominance. Dakar Rally victories showcased reliability under extreme conditions and fed the Adventure lineup—bikes that balance long-travel composure with startling pace. On the street, the Duke and RC families brought razor geometry and punchy singles/twins to license tiers worldwide, while the 1290 Super Duke and Adventure pushed the IMU-aided edge of performance. Corporate agility—acquisitions, platform sharing with Husqvarna/GASGAS—expanded reach without blurring identity. Historically, KTM changed expectations for chassis feedback and electronics integration in dirt and on road, proving that orange-painted ferocity could also be precise. The brand’s throughline is simple: build light, communicate grip, and let riders go fast safely. Few companies have turned a color and a slogan into such a reliable proxy for results.

Other Years

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