Yamaha YZ85 2021 — Specifications

Do you remember your first real race bike? Not the little automatic trail bike, but the sharp, responsive machine that smelled of castor oil and challenge. For a whole generation of future riders, this baptism of fire comes through an iconic displacement: the 85cc segment. And in this kingdom of adolescents in racing suits, one reference stands out, a machine that has trained more champions than can be counted. We are talking about the Yamaha YZ85, a concentration of racing technology designed for 12-16 year olds ready to dive into the heart of motocross.

Under this 5-liter fuel tank beats a tiny but terribly effective heart: an 85 cm³ two-stroke single-cylinder engine, liquid-cooled. But don't be fooled, this is not a moped engine. It is equipped with the famous Yamaha Power Valve System (YPVS), a technology inherited directly from the GP bikes to sculpt the power curve. The result? A lightning-fast acceleration, capable of creating a gap at the start against the competition. With approximately 29 horsepower delivered for a featherweight weight of 73 kg fully fueled, the power-to-weight ratio is simply explosive. The six-speed gearbox with close ratios allows you to always keep the engine in its optimal operating range, whether in a technical section or on a straightaway.

Where many manufacturers cut corners on small displacements, Yamaha did things properly. The steel double cradle frame, combined with an aluminum swingarm, offers controlled rigidity that inspires confidence. The 330 mm ground clearance and 1255 mm wheelbase betray an aggressive geometry, designed to attack bumps. The suspension is serious: a 36 mm KYB inverted fork and a mono-shock absorber, both fully adjustable. This is big sister equipment, which allows you to precisely adjust the behavior according to the rider's weight or the type of terrain. The brakes, a 220 mm disc at the front and 190 mm at the rear, have the necessary bite to tame this liveliness.

So, who is this blue arrow for? Clearly for the young rider who has surpassed the trail stage and who aims for competition, even in club racing. It is the perfect tool to learn how to manage an engine with a specific high power output, a clutch and close ratios. Its price, around 5000 euros for the base model, makes it a significant but consistent investment with its level of equipment. However, it should be noted that the YZ85 is not homologated for road use, its universe is strictly limited to circuits or private roads. Faced with a KTM 85 SX or a Husqvarna TC 85, it plays the card of reliability and well-thought-out ergonomics, with its adjustable handlebars and flat seat, rather than pure power excess.

The YZ85 is not a compromise bike. It is a pure training and performance tool, demanding but incredibly formative. It doesn't flatter, it teaches. It transmits the essential basics: control of torque, use of the front brake, positioning on the machine. For a passionate and supervised teenager, it is probably one of the best schools that exists. It doesn't make things easy, but it best prepares for the next step, the 125 two-strokes or the 250 four-strokes. It's more than a bike, it's a rite of passage.