Tough terrain won’t stop us from winning. With championship-proven technology and tuning to take on every challenge, the KX450X has what it takes to win outdoors. Get the off-road edge by riding the bike built to stay ahead of the rest.

Specifications

Engine

Engine type

Liquid-cooled, 4-stroke, single-cylinder

Compression ratio

12.5:1

Valve system

DOHC, 4 valves

Bore x stroke

96.0 x 62.1 mm

Displacement

449 cm³

Fuel system

Fuel injection: 44 mm x 1

Lubrication

Forced lubrication, semi‑dry sump

Starting system

Electric

Ignition system

Digital

 

 

Performance & Transmission

Transmission

5-speed, return shift

Clutch

Wet, multi disc

Primary reduction ratio

2.727 (60/22)

Gear ratios 1st

1.750 (28/16)

Gear ratios 2nd

1.412 (24/17)

Gear ratios 3rd

1.188 (19/16)

Gear ratios 4th

1.000 (19/19)

Gear ratios 5th

0.875 (21/24)

Final drive

Sealed chain

Final reduction ratio

3.846 (50/13)

 

 

Frame & Dimensions

Frame type

Perimeter, aluminium

Trail

119 mm

Wheel travel front

305 mm

Wheel travel rear

307 mm

Tyre, front

AT 24 x 8-12

Tyre, rear

140/80-18M/C 70R

L x W x H

2,180 x 815 x 1,260 mm

Steering angle L R

42° / 42°

Wheel base

1,480 mm

Ground clearance

335 mm

Fuel capacity

6.2 litres

Seat height

955 mm

Curb mass

113.8 kg

 

 

Brakes & Suspension

Front brake type

Single semi-floating petal disc

Front brake diameter

Ø 270 mm

Front brake caliper type

Brembo dual-piston

Rear brake type

Single petal disc

Rear brake diameter

Ø 240 mm

Rear brake caliper type

Single-piston

Front suspension type

Inverted fork with adjustable compression and rebound damping

Front suspension diameter

Ø 49 mm

Rear suspension type

Uni-Trak, adjustable dual-range (high/low-speed) compression and adjustable rebound damping, and spring preload adjustability

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