KTM 85 SX (17/14) - 2005 Specifications and Reviews

The 2005 KTM 85 SX is a lightweight two-stroke minibike designed for young riders transitioning to competitive motocross. Known for its sharp handling and responsive power delivery, this machine excels in youth racing classes with its liquid-cooled 84cc engine and premium WP suspension. Its compact dimensions and 17/14 wheel setup provide the perfect platform for developing fundamental riding skills.

2005
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General information

CategoryMinibike, cross
Year2005
ModelKTM 85 SX (17/14)

Engine and Transmission Specifications

ClutchWet multi-disc clutch, operated hydraulically
Transmission type,final driveChain
Cooling systemLiquid
IgnitionMoric digital 2M1
Fuel systemCarburettor. Keihin PWK 28
Bore x stroke47.0 x 49.0 mm (1.9 x 1.9 inches)
Engine typeSingle cylinder, two-stroke
Capacity:84.90 ccm (5.18 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter216 mm (8.5 inches)
Rear brakesSingle disc
Front brakes diameter216 mm (8.5 inches)
Front brakesSingle disc
Rear suspensionWP PDS monoshock
Front suspension travel43 mm (1.7 inches)
Front suspensionWP USD
Trail81 mm (3.2 inches)
Rake (fork angle)24.0°
Frame typeChromium molybdenum
 
 

Physical measures and capacities

Fuel capacity5.00 litres (1.32 gallons)
Wheelbase1,278 mm (50.3 inches)
Ground clearance415 mm (16.3 inches)
Seat height900 mm (35.4 inches) If adjustable, lowest setting.
Dry weight68.0 kg (149.9 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

Best For

Track20%
City5%
Cornering85%
Daily Riding5%
Touring5%
Passenger0%

Rider Profile

Best ForThis is a purpose-built youth motocross machine intended for young, developing riders already progressing through junior competition, not adult beginners.
PurposeBuilt exclusively for motocross racing and off-road training on dirt tracks, it excels at jumps, berms, and technical terrain rather than any road use.
Rider FitIts tiny 68kg dry weight, low-travel suspension, and compact chassis are sized for young, lightweight riders, not full-grown adults.
CharacterA sharp, high-revving two-stroke with race-tuned WP suspension, it rewards aggressive, precise riding with immediate, lively feedback.
Not Ideal ForIt is not suitable for adult riders, road commuting, touring, or carrying a passenger under any circumstances.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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