Built around Ktm's cross - motocross motorcycle platform, the 2021 Ktm 85 SX 17-14 pairs a 84.9 cc (5.2 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. 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 kg (148 lbs) dry. Rider ergonomics and chassis geometry center around a 865 mm (34.1 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 5.2-liter (1.4 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
865 mm (34.1 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
IgnitionMEDJ digital EMS
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 SuspensionXACT 43 WP Upside-Down fork, Ø 43 mm
Front Travel278 mm (10.9 inches)
Rear SuspensionWP Xplor PDS shock absorber
Rear Travel305 mm (12.0 inches)
Wheelbase1290 mm (50.8 inches)
Ground Clearance336 mm (13.2 inches)
Wheels & Brakes
Front BrakesSingle disc
Front Brake Ø240 mm (9.4 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight67.0 kg (147.7 pounds)
Seat Height865 mm (34.1 inches) If adjustable, lowest setting.
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.
