At the heart of the 2018 KTM 85 SX 17-14 cross - motocross motorcycle, KTM features a 84.9 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke configuration. 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 17-14 measures 67.5 kg (149 lbs) dry. Rider ergonomics and chassis geometry center around a 855 mm (33.7 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,290 mm (50.8 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 17 indexed model years from 2007 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
855 mm (33.7 in)
Engine
Displacement84.9 ccm (5.18 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed intake.
Bore x Stroke47.0 x 49.0 mm (1.9 x 1.9 inches)
Fuel SystemCarburettor. Mikuni TMX
IgnitionAET digital
LubricationMixture oil lubrication
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchWet, multi-disc clutch, Formula hydraulics
Driveline1/2 x 5/16
Chassis
Frame TypeCentral-tube frame with double-cradle
Rake24.0°
Front SuspensionWP upside-down Ø 43 mm
Front Travel270 mm (10.6 inches)
Rear SuspensionWP PDS shock absorber
Rear Travel300 mm (11.8 inches)
Wheelbase1290 mm (50.8 inches)
Ground Clearance352 mm (13.9 inches)
Wheels & Brakes
Front BrakesSingle disc. Four-piston calipers.
Front Brake Ø220 mm (8.7 inches)
Rear BrakesSingle disc. Two-piston calipers.
Rear Brake Ø210 mm (8.3 inches)
Dimensions & Weight
Dry Weight67.5 kg (148.8 pounds)
Seat Height855 mm (33.7 inches) If adjustable, lowest setting.
Fuel Capacity5.00 litres (1.32 US gallons)
Other
StarterKick
Color OptionsOrange/white/black
Notes
Small wheel version of the KTM 85 SX. 17 and 14 inch wheels.
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.
