KFX450R

KFX450R

Pure Adrenalin x 4

The KFX450R was designed with everything to keep it ahead of the pack, whether it’s ridden on the track or trail. Its engine comes straight from the World Supercross Championship-winning KX450F with the addition of digital fuel injection and a reverse gear for backing out of tight situations.

The all new aluminium frame is both lightweight and rigid, plus it’s designed for superb handling and to allow the KFX450R to maximize traction without wasted wheelspin. Kawasaki made the KFX450R race-ready so that extensive, and expensive, modifications are unnecessary to put it ahead of the pack.


transmission
 cockpit
 engine

5-Speed Transmission With Reverse

Following the ideal line is not always possible. When problems arise, the KFX450R's reverse gear (a class first) will prove indispensable in returning to the race or trail quickly.

Racing Cockpit

The shape of the seat, tank and side covers on the KFX450R were specifically designed not only to not hinder the rider’s mobility as he moves around, but also to provide support when hanging off in corners.

High Performance 4-Stroke Engine

The KFX450R’s power plant, based on the highly acclaimed engine of the KX450F

motocrosser, was newly designed for use in an ATV racer. Adding fuel injection, an electric starter, fitting a reverse gear, lowering the centre of gravity, re-tuning the engine for low-mid range torque to suit the weight of an ATV, and revising the intake and exhaust systems are among the many changes.
right

Digital Fuel Injection

The KFX450R's fuel injection increases race competitiveness by eliminating a key disadvantage of carburettors: fixed engine settings. This means no more compromises when riding in varied conditions.

Race-ready Trick Bits

A Renthal FAT-BAR comes standard on the KFX450R. Tapered, the Renthal bar offers both strength and light weight.

Lightweight Competition-Style Frame

The KFX450R comes equipped with a high performance frame right from the start. It is the first ATV in its class to offer a completely aluminium chassis for pure lightweight performance.
bwd1/5fwd
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Engine 4-stroke Liquid Cooled, DOHC,
Displacement 449
Bore & Stroke 96.0 X 62.1 mm
Compression ratio 12.0:1
Valve system DOHC, 4 valves per cyclinder
Carburettor Keihin 42mm x 1
Ignition Digital AC - DCI
Starting Electric
Cooling Liquid
Lubrication Forced lubrication, semi-dry sump
Transmission 5 speed (return) plus reverse
Primary drive Gear
Final drive O-Ring Chain 2WD
Primary reduction ratio 3.122 ~ 0.635 (belt converter)
Gear ratios:
1st 2.230 (29/13)
2nd 1.800 (27/15)
3rd 1.529 (26/17)
4th 1.278 (23/18)
5th 1.048 (22/21)
Reverse 2.364 (16/11 x 26/16)
Final reduction ratio 2.714 (38/14)
Clutch Wet multi-disc, manual
Frame Type Double cradle, aluminium
Suspension:
front Dual A-arms
rear Swingarm and single shock with piggy-back reservoir
Wheel travel:
front 215 mm
rear 254 mm
Tyres:
front AT 21 x 7R10 Tubeless
rear AT 20 x 10R9 Tubeless
Caster (rake) 1.8o
Trail 7.6 mm
Tread (front/rear) 972 mm / 899 mm
Steering angle (left/right) 40o / 39o
Front Brakes Dual 163 mm discs with 2-piston calipers
Rear Brakes 200 mm petal disc brake with 1 piston caliper
Parking brake Engages rear brake
Battery 12 V, 12 Ah
Headlights (high/low) 12 V, 45/45 W x 2
Tail/brake light 12 V, 5/21 W
Overall length 1,806 mm
Overall width 1,170 mm
Overall height 1,064 mm
Wheelbase 1,255mm
Ground clearance: 108 mm
Seat height 786 mm
Curb mass 179 kg
Fuel capacity 10 litres

The specifications mentioned here apply to and have been achieved by production models under standard operating conditions. We intend only to give a fair description of the vehicle and its performance capabilities but these specifications may not apply to every machine supplied for sale. Kawasaki Heavy Industries, Ltd. reserves the right to alter specifications without prior notice. Equipment illustrated and specifications may vary to meet individual markets.

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