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Cross - Motocross · 2026

Yz450Fx

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2026 Yamaha Yz450Fx Technical Analysis & Specification Breakdown

Positioned in Yamaha's cross - motocross motorcycle lineup, the 2026 Yamaha Yz450Fx pairs a 450 cc engine architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 97.0mm × 60.9mm with a 13.0:1 compression ratio.

On the scales, the Yz450Fx measures 251 kg (553 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 37 mm (1.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 57 mm (2.3 in) wheelbase engineered for quick, flickable steering geometry. The 2.1-liter (0.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Yamaha archive, this model family spans 9 indexed model years from 2016 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Standover Height
37 mm (1.5 in)
Engine
Displacement 450 cc
Engine Details 450cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Compression 13.0:1
Bore x Stroke 97.0mm × 60.9mm
Ignition TCI / Electric
Lubrication Wet sump
Transmission
Gearbox 5-speed; multiplate wet clutch
Final Drive Chain
Chassis
Trail 4.8 in
Wheelbase 57.9 in
Ground Clearance 13.0 in
Dimensions & Weight
Weight incl. 251 lb
Seat Height 37.6 in
Fuel Capacity 2.1 gal
Other
Starter TCI / Electric
More from Yamaha
Buying Checklist

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Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

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Off-Road & Adventure
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