2004 KTM Sportminicycles -
The 85 SX is the latest KTM offer. After presenting
the prototype at the Intermot in Munich last
year, this year the 85 SX goes into series production.
A completely new development with all the important
features of the successful "big sisters" from
the Motocross GP sport. This model closes the
gap between the sportminicycles and the full-sized
The offspring crosser 85 SX is a completely
new construction which closes the last gap in
the KTM model family. KTM also remains true
to its principle with the newly conceived 85
SX: development from racing and for racing,
combined with best workmanship qualities, and
careful choice of components. Because when it
comes to the motor and chassis, the new 85 SX
doesn't have to hide from the KTM family's big
crossers one bit. Full-size White Power suspension,
hydraulic disc brakes and clutch, a lighter
and torsionally stiffer chrome-moly-steel frame
and 19"/16" (alternative 17"/14") wheels show
the competition that the 85s rule again - in
Completely new developed liquid cooled 2-stroke
engine with 84.93 cc and mechanical exhaust
Hydraulically operated wet multi-disc clutch.
Extra large air filter box and air filter
similar in size to a standard 125 bike.
Keihin PWK 28 carburettor for an extremely
broad power band.
New cast swing arm.
Frame geometry following that of the 125 SX.
Aluminum rear frame.
One-piece rear with integrated side covers
43 mm White Power USD fork with adjustable
rebound and compression (each 20 positions)
and 275 mm travel.
White Power PDS rear shock with adjustable
rebound and adjustable high- and low-speed compression
and 288 travel.
High quality Excel rims with reinforced spokes.
17"/14" wheels can be easily replaced by 19"/16"
wheels without any changes on the bike.
220 mm front wheel brake disc with 4-piston
200 mm rear wheel brake disc with 4-piston
Foot brake-cylinder with integrated compensation
Total weight 67 kg.
Engine Type - single cylinder, 2-stroke
Displacement (cc) - 84.93
Bore x stroke (mm) - 47 x 48.95
Starter - Kick-starter
Carburetor - Keihin PWK 28
Engine lubrication - mixture lubrication
Primary drive - 19:66
Final drive - chain 1/2 x 5/16" 124 R
Cooling - liquid cooled
Clutch - wet multi-disc clutch, operated hydraulically
Ignition - Moric 2M1
Frame - chromium molybdenum central-type
Subframe - Aluminum
Handlebar - Alu D22
Front suspension - WP USD 43
Rear suspension - WP PDS monoshock
Suspension - travel front / rear 275/(287/300)
Front brake - disc brake R 220 mm
Rear brake - disc brake R 200 mm
Front / rear rim - 1,6 x 19"; 1,85 x 16"
Front / rear tire - 70/100-19"; 90/100-16"
Transmission ratio - 14:49
Main silencer - Aluminum
Steering head angle - 24°
Wheel caster - 95 mm
Wheel base - 1278 mm
Ground clearance (unloaded) - 430 mm
Seat height - 900 mm (adjustable)
Fuel capacity - approx. 5 liters
Weight (ready to race, no fuel) - approx.