Designed for the younger generation of motocross riders, the RM65 features the same aggressive new graphics and racing image as its "big brothers."

It features a 64cc single-cylinder liquid-cooled reed-valve engine with the similar power-enhancing features as those found in the larger RM models.

Like all the RMs, it features a composite-electro-plated aluminium cylinder for better heat transfer and tighter piston sealing resulting in enhanced power.

The engine is tuned to produce the type of mid-range torque, smooth throttle response and broad powerband that youngsters appreciate, with a large airbox, 24mm carburettor, four-petal reed valve and CDI ignition.

The exhaust-port bridge is convex, reducing scuffing for longer piston life, and the cylinder itself is bolted directly to the crankcases without cylinder stud bolts.

Wide, dual O-rings on the head pipe improved exhaust-system-to-cylinder sealing, and the oval-section exhaust silencer can be repacked.

The 6-speed transmission and clutch of the RM65 are built for smooth shifting and short throws, the shift drum riding in needle roller bearings, and the ends of the shift forks are hardened to resist wear.

As a junior motocross bike, the RM65 chassis is designed to "grow" with the rider, and can accommodate a range of rider heights and weights.

The seat height of the RM65 can be adjusted with optional-length link rods available in 1mm length increments. Each 1mm change in link rod length raises or lowers the seat by 2mm.

The single-backbone, dual-cradle high-tensile-steel-tube frame carries a rectangular steel swingarm using a progressive suspension linkage.

Relatively flat handlebars work for riders with varying arm lengths, and tapered roller bearings in the steering head reduce the effort needed to turn the bars.

Leading-axle 33mm front forks with 0.27-rated springs deliver 210mm of wheel travel and feature adjustable rebound damping. A nitrogen-charged piggyback-reservoir rear shock carries a 4.9-rated spring and delivers 240mm of wheel travel through a progressive linkage.

Stopping power is provided through front and rear 180mm disc brakes which  are gripped by aluminium alloy single piston calipers.

The left side seat rail is detachable, allowing for easy access to the rear suspension and air clearer., and rugged, serrated footpegs provide excellent grip.

The 'K3' RM65 is due to arrive in July 2003.