Compare Dirt Bikes

Pick any two bikes to see specs and photos side by side. Differences are highlighted. Blank = not yet verified for that year-model (we don’t guess).

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450cc 4-stroke

photo coming soon

2023 GasGas MC450F

Yamaha

2023 Yamaha YZ450FX

Class	450cc 4-stroke	450cc 4-stroke
Displacement	449.9cc	450cc
Bore × stroke	95 × 63.4 mm	97 × 60.9 mm
Cooling	—	—
Induction	Keihin throttle body with an injector positioned for efficient fuel mixture flow	Mikuni fuel injection, 44mm
Power valve	—	—
Starter	Electric starter as standard	—
Transmission	5-speed	5-speed
Front suspension	WP XACT-USD, 48 mm	KYB spring-type fork with speed sensitive damping; fully adjustable, 12.2-in travel
Front travel	310 in	12.2 in
Rear travel	300 in	12.5 in
Front brake	260mm	270mm
Rear brake	220mm	240mm
Front wheel	—	—
Rear wheel	—	—
Seat height	950 in	37.6 in
Wheelbase	—	58.3 in
Weight	100 lb (without fuel)	254 lb (wet weight)
Fuel capacity	7 gal	2.2 gal
MSRP	—	—

Highlighted (blue) values differ. Verified manufacturer data; see each bike’s page for sources. Torque/fluid specs are on the individual pages (service-manual only).