Built around KTM's minibike, sport motorcycle platform, the 2004 KTM 85 SX relies on a 84.9 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 47.0 x 49.0 mm (1.9 x 1.9 inches).
On the scales, the 85 SX measures 68 kg (150 lbs) dry. Rider ergonomics and chassis geometry center around a 900 mm (35.4 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,278 mm (50.3 in) wheelbase engineered for quick, flickable steering geometry. The 5-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's KTM archive, this model family spans 4 indexed model years from 2003 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
900 mm (35.4 in)
Engine
Displacement84.9 ccm (5.18 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Bore x Stroke47.0 x 49.0 mm (1.9 x 1.9 inches)
Fuel SystemCarburettor
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypeChromium molybdenum central-type frame
Front SuspensionWP USD 43
Rear SuspensionWP PDS monoshock
Wheelbase1278 mm (50.3 inches)
Ground Clearance430 mm (16.9 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesSingle disc
Rear Brake Ø200 mm (7.9 inches)
Dimensions & Weight
Dry Weight68.0 kg (149.9 pounds)
Seat Height900 mm (35.4 inches) If adjustable, lowest setting.
Alt. Seat Height675 mm (26.6 inches) If adjustable, highest setting.
Fuel Capacity5.00 litres (1.32 US gallons)
Other
Color OptionsOrange
Notes
KTM SX 85 USA is slighly modified version of this bike sold in the US only.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
