Yamaha YZF450 Motocross Bikes For Sale On eBay

The Yamaha YZ450F is a high-performance 450cc motocross bike built for riders seeking a punchy, revving machine with race capability.
Typical specs (guide only – always check with the manufacturer or original spec sheet for exact model details):

Displacement: ~449 cm³
Frame: aluminium perimeter / bilateral beam style
Front suspension: inverted forks
Seat height: ~960 mm
Weight: ~115–118 kg (depending on year and parts)

These are rough ranges. Always check with the manufacturer or an official source for the specific model year you’re looking at.

Buying tips for a used YZ450F

Engine & hours
Be cautious with crankshaft/rod issues — several owners report failures or snapping in newer models (some as early as 15–50 hours) attributed to possible heat treatment or manufacturing flaws.
Also, for 2023–2025 machines there are complaints about clutch baskets burning out early — some suggest fitting aftermarket baskets or using upgraded plates.
Check whether any ECU remaps were done; aggressive mapping plus poor fuel quality can push stress on pistons, rods and bearings.

Chassis & suspension
Some earlier models use air forks which are more sensitive to maintenance and prone to seal leaks under stress or wear. Later versions use more robust coil or cartridge setups.
Check for cracks or repair work around the head tube, linkage pivot points, swingarm mount, and frame welds — especially if used in heavy riding or competitive situations.
Also verify the integrity of rear shock mounts and shock linkage bearings for play or wear.

Alternatives to consider

If YZ450F listings are limited, overpriced, or problematic, you could also look at:

• Kawasaki KX450 / KX450F

• Honda CRF450R