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2021 Kawasaki KX™ 450X

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Details

POWER

  • Engine4-stroke single, DOHC, liquid-cooled
  • Displacement249cc
  • Bore x Stroke78.0 x 52.2mm
  • Compression Ratio14.1:1
  • Fuel SystemDFI® with 44mm Keihin throttle body and dual injectors
  • IgnitionDigital CDI
  • Transmission5-speed, return shift, with wet multi-disc manual clutch
  • Final DriveChain
     

PERFORMANCE

  • Front Suspension / Wheel Travel48mm inverted telescopic coil spring fork with 23-way compression damping and 20-way rebound damping /12.4 in
  • Rear Suspension / Wheel TravelUni-Trak® with dual-range (2.25 turns high speed/21-way low-speed) compression damping, 38-way rebound damping and adjustable preload/12.4 in
  • Front Tire80/100-21
  • Rear Tire110/100-18
  • Front BrakesSingle semi-floating 270mm Braking® petal disc with dual-piston caliper
  • Rear BrakesSingle 240mm Braking® petal disc with single-piston caliper
     

DETAILS

  • Frame TypeAluminum perimeter
  • Rake/Trail27.8/4.8 in
  • Overall Length85.4 in
  • Overall Width32.3 in
  • Overall Height49.6 in
  • Ground Clearance13.0 in
  • Seat Height37.2 in
  • Curb Weight230.2 lb without fuel / 240.2 lb**
  • Fuel Capacity1.64 gal
  • Wheelbase58.3 in
  • Color ChoicesLime Green

Engine

  • Engine Type:
    Single-Cylinder
  • Cylinders:
    1
  • Engine Stroke:
    4-Stroke
  • Cooling:
    Liquid
  • Valves:
    4
  • Valves Per Cylinder:
    4
  • Valve Configuration:
    DOHC
  • Bore (mm):
    96
  • Bore (in):
    3.78
  • Stroke (mm):
    62.1
  • Stroke (in):
    2.45
  • Displacement (cc):
    449
  • Displacement (ci):
    27.4
  • Compression Ratio:
    12.5:1
  • Starter:
    Electric
  • Fuel Requirements:
    Regular
  • Fuel Type:
    Gas

Brakes

  • Front Brake Type:
    Disc
  • Front Brake Diameter (in):
    10.6
  • Front Brake Diameter (mm):
    270
  • Rear Brake Type:
    Disc
  • Rear Brake Diameter (in):
    9.8
  • Rear Brake Diameter (mm):
    250

Carburetion

  • Carburetion Brand:
    Keihin
  • Fuel Injector:
    Yes
  • Fuel Injector Size (mm):
    44
  • Carburetion Type:
    Fuel Injected

Dimensions

  • Length (in):
    86
  • Length (mm):
    2184.4
  • Width (in):
    32.3
  • Width (mm):
    820.4
  • Height (in):
    49.8
  • Height (mm):
    1264.9
  • Wheelbase (in):
    58.5
  • Wheelbase (mm):
    1485.9
  • Ground Clearance (in):
    13.2
  • Ground Clearance (mm):
    335.3
  • Length (ft):
    7.17
  • Length (ft/ft):
    7
  • Length (ft/in):
    2

Other

  • Fuel Capacity (gal):
    1.64
  • Fuel Capacity (l):
    6.2
  • Frame:
    Aluminum
  • Body Material:
    Plastic
  • Side Cover:
    Yes
  • Engine Case Guard:
    Yes
  • Fork Guards:
    Yes
  • Exhaust Guard:
    Yes
  • Foot Peg Location:
    Driver
  • Adjustable:
    Yes
  • Front Suspension Type:
    Inverted Fork
  • Front Suspension Size (in):
    1.9
  • Front Suspension Size (mm):
    49
  • Front Travel (in):
    12
  • Front Travel (mm):
    304.8
  • Front Adjustable Rebound Damping:
    Yes
  • Front Suspension Brand Name:
    Showa®
  • SysModelID:
    106860
  • MfrModelID:
    KX450KMFNN
  • Year:
    2021
  • Manufacturer:
    Kawasaki
  • Model Name:
    KX™
  • Trim Name:
    450X
  • Family Name:
    KX™
  • Product Type:
    Motorcycle / Scooter
  • Manufacturer Type:
    Motocross
  • Generic Type (Primary):
    Off-Road
  • Manufacturer Country:
    Japan
  • Photo Name:
    2021_Kawasaki_KX_450XC.jpg
  • Major Revision Year:
    2021
  • Revision Status:
    New
  • Competitor Code:
    MOT21OAI000
  • Introduction Year:
    2021
  • SysTrimId:
    330011
  • SysMakeId:
    3
  • Data Provider:
    CRS
  • Parent Company:
    Kawasaki
  • Display Name:
    KX™450X
  • Engine Displacement to Weight (cc):
    1.93
  • Currency:
    US Dollars
  • Destination Charge:
    410
  • Rear Suspension Type:
    Twin Sided Swing Arm
  • Rear Travel (in):
    12.1
  • Rear Travel (mm):
    307.3
  • Rear Adjustable Shock / Spring Pre-Load:
    Yes
  • Rear Adjustable Rebound Damping:
    Yes
  • Number Rear Shock Absorbers:
    1
  • Rear Suspension Brand Name:
    UNI-TRAK®
  • Rear Suspension Material:
    Aluminum
  • Seat Type:
    One-Piece
  • Seat Material:
    Vinyl
  • Seat Location:
    Driver
  • Seat Height (in):
    37.6
  • Seat Height (mm):
    955
  • Number Of Seats:
    1
  • Stand Type:
    Kick
  • Steering Control:
    Handlebar
  • Tire Brand:
    Dunlop®
  • Front Tire Width:
    80
  • Front Tire Aspect Ratio:
    100
  • Front Tire Speed Rating:
    M
  • Front Wheel Diameter:
    21
  • Rear Tire Width:
    120
  • Rear Tire Aspect Ratio:
    90
  • Rear Tire Speed Rating:
    M
  • Rear Wheel Diameter:
    18
  • Front Tire (Full Spec):
    Dunlop® Geomax AT18F: 80/100-21 51M
  • Rear Tire (Full Spec):
    Dunlop® Geomax AT18 120/90-18 65M
  • Wheels Composition:
    Aluminum
  • Tube / Tubeless:
    Tubed
  • Front Wheel Width (in):
    1.6
  • Rear Wheel Width (in):
    2.15

Our Location

Big River Motorsports
806 S VAN BUREN ST
Newton, IL 62448