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Yamaha YZ 450 F
2021
2021
The 2021 Yamaha YZ450F represents a refined iteration in Yamaha's long-standing motocross lineage, building upon years of development in the competitive dirt bike arena. This particular model year saw subtle but impactful updates, solidifying its position against formidable rivals like the Honda CRF450R and the Kawasaki KX450. Known for its distinct reverse-cylinder head design, the YZ450F has consistently been a top contender in the 450cc class, appealing to riders seeking a powerful and capable machine for motocross tracks worldwide.
At the heart of the 2021 YZ450F is its potent 449.0 ccm (27.40 cubic inches) engine, a liquid-cooled, DOHC, four-valve powerplant that delivers robust power across the rev range. This engine is renowned for its strong, usable power delivery, allowing riders to clear jumps and accelerate out of corners with authority. Fuel capacity is a practical 6.06 litres (1.60 US gallons), providing sufficient range for multiple motos or extended practice sessions without frequent refueling stops. The engine's design, with its rearward-slanted cylinder and forward-mounted airbox, contributes to the bike's centralized mass and handling characteristics.
Riding characteristics of the 2021 YZ450F are heavily influenced by its chassis and suspension setup. The aluminum bilateral beam frame provides a good balance of rigidity and flex, translating to precise handling and stability, especially at speed. The suspension components, fully adjustable KYB units, offer excellent bump absorption and feedback, crucial for navigating challenging motocross terrain. The seat height, at 965 mm (38.0 inches) in its lowest adjustable setting, provides a commanding riding position while still allowing for rider movement and control. The overall ergonomics are designed for aggressive motocross riding, with a rider triangle that facilitates standing and shifting weight.
The target audience for the 2021 Yamaha YZ450F primarily comprises experienced motocross racers and serious enthusiasts who demand a high-performance machine for competition and intense off-road riding. Its powerful engine and refined chassis make it suitable for riders who can harness its capabilities on challenging tracks. While approachable for some advanced intermediates, its performance potential is best utilized by those with a solid foundation in motocross technique. The YZ450F continues to be a strong choice for riders seeking a proven, competitive package in the 450cc class.
✅ Why buy this bike?
• Potent 449cc engine delivers class-leading power and torque for competitive motocross starts and jumps. • Excellent KYB Speed Sensitive System (SSS) suspension offers superb adjustability and plush, controlled ride. • Renowned Yamaha reliability and build quality ensure durability through demanding race conditions and long-term ownership. • Lightweight aluminum bilateral beam frame provides precise handling and agile cornering on technical tracks. • Yamaha Power Tuner app allows wireless engine mapping adjustments for track-specific performance optimization. • Strong braking performance from the large front rotor and well-modulated rear brake provides confidence.⚠️ Things to consider
• High seat height and aggressive ergonomics can be challenging for shorter riders or those new to full-size motocross. • Intense power delivery may be overwhelming for less experienced riders, requiring careful throttle control. • Maintenance schedule is frequent and meticulous, typical for high-performance race bikes, adding to running costs. • Loud exhaust note is characteristic of a race bike and might not be suitable for noise-sensitive riding areas. • Lack of kickstand and electric start only can be inconvenient for trail riding or non-race applications.Rule of thumb: under 125cc / 15HP → A1, under 47HP → A2, above → A.
Estimated average for 449cc class: 45-60 mpg (4.0-5.5 L/100km)
⛽ Tank: 6.06 litres (1.60 US gallons)
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