Two-piece front
Two-piece construction of the front and rear lapped fenders means they can be replaced separately in the event they are damaged.
Exhaust
A lightweight high-performance titanium exhaust header pipe contributes to lowmid response.
Front suspension
The front suspension features shocks with dual-rate springs. Even when the machine is unloaded, the shocks are considerably compressed, which means that there is plenty of travel available for negative-G situations. The ability of the front wheels to stay in constant contact with ground means that even when the ground drops away suddenly, traction necessary for control is maintained.
The front headlight assemblies can easily be removed to reduce weight when racing in Mxstyle (GNC) events.
The front headlight assemblies can easily be removed to reduce weight when racing in Mxstyle (GNC) events.
Rear suspension
At the rear, suspension duties are borne by a cast aluminium swingarm with high torsional rigidity and a rear shock offering dual compression adjustability (highspeed and low-speed damping can be tuned separately) as well as rebound damping adjustability. Taking into account the chassis' low centre of gravity, rear suspension settings offer superb road holding and traction.
The rear axle is tapered for reduced unsprung weight.
The rear axle is tapered for reduced unsprung weight.
Ergonomics
The shape of the seat, tank and side covers 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. Even the feeling the rider gets coming into contact with these parts was carefully considered in their design.
Electrical starter
Electrical starter facilitates starting. (An optional kick-start system is available for MX-style (GNC) races where lightweight is a priority.)
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 by tilting the cylinder bank angle forward to 9°, 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.
Reverse gear
The compact reverse-lock release lever can be activated with the right thumb, allowing the reverse gear to be engaged while still keeping the front brake lever depressed. The 5-speed (1 down, 4 up) transmission locates the reverse gear below first. (Actuating the reverse-lock release lever when in 1st gear allows you to shift "down" into reverse.) The combination of the reverse gear system with the lightweight aluminum chassis is no heavier than using a steel frame.
Spring's progressive damping
The springs' progressive damping characteristics were designed not only to provide excellent rough-road handling, but also to ensure riders feel nothing strange as the suspension does its work, allowing them to better focus on their riding.
Rear wheels
Specially designed rear wheels feature rims with reinforcing plates. Located on the inner (axle) side of the rims, these plates reinforce the rims where strength is most needed (for landing jumps, etc) while minimising weight.
Handlebar
A Renthal FAT-BAR is standard equipment. Tapered, the Renthal bar offers both strength and lightweight. The handlebar mount, positioned high enough to use the Renthal bar, can easily accommodate other MX handlebars, enabling riders to select from among numerous after-market parts according to personal preference.