Kawasaki KX 85 Top Speed, Specs, and Features (Explained)

If you want your child’s racing career to kick off with steadiness and excellent performance, the Kawasaki KX85 dirt bike makes a perfect choice. The KX85 bike is a fast and reliable choice for novice riders who want to become champion racers. Riders have two size options from KX85-I and KX85-II to allow many riders to find a perfect match – the difference is in the wheel size.

This dirt bike represents high performance and winning technology. It operates on direct power, nimble handling, and race styling to finish the line first. Better still, it has a unique design of pushing and encouraging young riders to race and not just ride for fun.

Keep reading to learn more about this champion-grade KX85 dirt bike.

Kawasaki KX85 Top Speed, Specifications, Price, & Review

Kawasaki KX85 Review

KX85 is a dirt bike that does more than leaps. It also hops over the hills. The manufacturer has packed a professional-grade system into this tiny bike to ensure young racers kick off at an excellent level.

Let’s see what KX85 has to offer the kid rider;

Kawasaki KX 85 Top Speed: 80mph (129 Km)

Kawasaki KX 85 Seat Height: 830 mm (32.7 in)

Fuel and Lubrication

Aside from the fuel capacity of 5.68L of unleaded gasoline, KX85 allows switching fuel brands as long as you maintain the standards. But don’t mix and use more than one fuel brand simultaneously, as this may cause severe engine damage.

Also, the single exhaust produces less noise, is lightweight, and is easy to maintain.

As for lubrication, KX85 works well with petrol mix or its equivalent. The oil should have at least API grade or other thickness grades with a favorable temperature.


Kawasaki KX85 awakens through a kickstart method and an electronic Capacitor Discharge Ignition (CDI). The ignition control works at 9 – 12° BTDC at 12,000 RPM.

KX85 features a charging system of the flywheel magneto.

Additional Features

The slim fuel tank and the flat seat allow racers to move freely across the length and at high speed. Also, the clutch uses a pull-type method to ensure flawless operation and easy maintenance. Plus, there are optional spacers to allow quick height adjustments.

Price and Competition

Several dirt bikes are available in the 85cc category to provide you with more options if the KX85 doesn’t excite you. You can choose the RM85, Yamaha YZ85, KTM 85 or Husqvarna TC 85. The competitors’ price range is slightly above the KX85, making it unreachable for most young riders.

Kawasaki KX85 Key Specifications

Engine typeLiquid-cooled, 2-stroke Single with KIPS
Displacement84 cm³
Bore x stroke48.5 x 45.8 mm
Compression ratio10.9:1 (low speed); 9.0:1 (high speed)
Valve/Induction systemPiston Reed valve
Fuel systemCarburettor: Keihin PWK 28
IgnitionDigital CDI
StartingPrimary kick
LubricationPre-mix (32:1)
Transmission6-speed, return
Final DriveChain
Primary reduction ratio3.400 (68/20)
Gear ratios:1st 2.538 (33/13)
Gear ratios:2nd 1.875 (30/16)
Gear ratios:3rd 1.500 (27/18)
Gear ratios:4th 1.250 (25/20)
Gear ratios:5th 1.090 (24/22)
Gear ratios:6th 0.956 (22/23)
Final reduction ratio3.571 (50/14)
ClutchWet Multi Disc, manual
Frame typePerimeter, high-tensile steel
Rake/Trail29° / 97 mm
Wheel travel, front275 mm
Wheel travel, rear275 mm
Tyre, front70/100-17 40M
Tyre, rear90/100-14 49M
Steering angle, left / right45° / 45°
Brakes, frontSingle 220 mm disc with dual-piston caliper
Brakes, rearSingle 184 mm disc with single-piston caliper
Suspension, front36 mm inverted telescopic fork with 20-way compression damping
Suspension, rearUni-Trak with adjustable preload, 24-way compression and 21-way rebound damping
Dimensions (L x W x H)1,830 mm x 765 mm x 1,100 mm
Wheelbase1,255 mm
Fuel capacity5 liters
Seat height830 mm
Curb Mass75 kg

Top Features

  • Perimeter frame with subframe member
  • High-tensile steel frame
  • Siz position adjustable handlebar mounts
  • Inverted telescopic cartridge forks
  • Uni-Trak single rear shock absorber
  • 20-Way compression damping in front forks
  • 24-Way compression & 21-way rebound damping in the rear shock
  • Adjustable spring preload in the rear suspension
  • Front and rear petal disc brakes
  • 17-inch wire-spoke front wheel
  • 14-inch wire-spoke rear wheel
  • 2-Stroke single-cylinder engine
  • Exhaust power valve system
  • Liquid-cooled powertrain
  • Keihin carburetor
  • 6-Speed return-shift transmission
  • Wet multi-disc manual clutch

Kawasaki KX85 Specifications

Engine & Transmission

Engine TypeSingle-cylinder, 2-stroke, SOHC
Engine Displacement84cc
No. of Cylinders1
Fuel TypePetrol
Fuel Supply28 mm Keihin carburetor
Cooling SystemLiquid cooling
Bore48.5 mm
Stroke45.8 mm
Compression Ratio10.9:1 (low speed) – 9.0:1 (high speed)
Valves Per Cylinder2
IgnitionCDI with digital advance
Transmission6-Speed, return shift
ClutchWet, multi-disc manual clutch
Final DriveChain

Top Speed Performance, & Mileage

Power28.97 hp
Torque18 Nm
Top SpeedKawasaki KX85’s top speed is 78 mph
Mileage25 km (approx)
0-60 mph12-14 seconds (approx)

Chassis & Suspension

Body TypeMotocrosser
ChassisHigh tensile steel perimeter frame with subframe
Front Suspension36 mm Inverted telescopic cartridge forks
Rear SuspensionUni-Trak single shock absorber
Front Wheel Travel10.8 inches
Rear Wheel Travel10.8 inches

Brakes, Wheels, & Tires

Front BrakeSingle petal disc with 2-piston caliper
Rear BrakeSingle petal disc with 1-piston caliper
Front Brake Diameter220 mm
Rear Brake Diameter184 mm
Front Wheel17 Inch spoke rims
Rear Wheel14 Inch spoke rims
Tire TypeTubed type
Front Tire Size70/100-17
Rear Tire Size90/100-14

Dimension & Capacity

Wheelbase49.8 inches
Length72.0 inches
Width30.1 inches
Height43.3 inches
Seat Height32.7 inches
Ground Clearance11.4 inches
Curb Weight165.3 lbs
Fuel Tank Capacity1.32 gal
Seating Capacity1

Electricals & Lighting

Battery TypeNo battery
Battery Capacity0
Pilot LightsNo
Turn SignalsNo
Pass LightNo

Instrument Console & Speedometer

Console TypeNo instrument console
Trip MeterNo
No. of Trip Meters0
Fuel GaugeNo
Gear Shift LightNo
Gear Position IndicatorNo
Low Fuel IndicatorNo
Engine Temperature IndicatorNo
Service IndicatorNo

Other Features

Electric StarterNo
Engine kill SwitchNo
Stand AlarmNo
Stepped SeatNo
Pillion SeatNo
Pillion GrabrailsNo
Pillion FootrestNo
Underseat StorageNo
Additional FeaturesERGO-FIT sizing system

See also: Kawasaki KX100 Top Speed


Kawasaki’s KX85 may not be the leading name in the mini dirt bike category, but its performance has a place at the top. The KX85 is a dirt bike meant for the champions, thanks to its ability to absorb all the bumps of different terrains.

This bike has everything figured out: the high-performing 85cc engine, remarkable torque, and acceleration to excellent throttle response.

Thanks to its reliable design originating from Kawasaki’s championship-winning bikes, KX85 is a perfect mini bike for novice young riders.

Leave a Comment