2025 YFZ450R

Race-bred high-performance engine

The YFZ450R's race-bred five-valve four-stroke 450cc engine features a compression ratio of 11.8:1 and high-performance camshafts for instant throttle response and race-winning high rpm power. The Air Induction System gives high fuel efficiency, reduced exhaust emissions and increased durability.

Race-bred high-performance engine The YFZ450R'

The YFZ450R's 5-speed transmission is one of the slickest shifting systems in its class, and is fitted with an assist and slipper clutch – the first time this race-developed technology has been used in this category. The system makes shifting between gears even easier for quicker lap times and reduced fatigue.

Long travel adjustable suspension

For reduced unsprung weight this model is fitted with Kayaba piggyback front shock absorbers and a calibrated rear shock. These adjustable units give refined handling performance to give you the edge over other competitors.

Hybrid chassis engineering

The YFZ450R uses a special combination of aluminium and steel in its frame and swingarm construction, and this innovative "hybrid chassis" design offers a winning combination of low weight together with outstanding strength and an excellent rigidity balance.

Electronic Fuel Injection

For sharp throttle response, the YFZ450R is equipped with a 42 mm Mikuni throttle body, which includes an ISC (Idle Speed Control) system for easy and reliable starting and warming up. This advanced system delivers instantaneous pick-up and contributes towards reduced emissions.

Ergonomic design

The YFZ450R is designed to work in perfect harmony with the rider for improved performance on the track and added comfort on the trail. The front and rear mudguards are designed to give more space around the rider for easy weight shifting when cornering or accelerating – and the heel guards are also relocated further back.