2012 Yamaha YFZ 450 R SE Engine Specifications

ATV Rider Online helps you research the new 2012 Yamaha YFZ 450 R SE engine specifications before buying this Sport quad. Find out what type of engine it is including all the details about the YFZ 450 R SE carburetion type, battery amps, number of valves per cylinder, engine displacement and compression ratio, cylinder bore and stroke, fuel requirements, and more. Simply choose from the options below to view the 2012 Yamaha YFZ 450R SE engine specs.

click to expand

Yamaha YFZ 450R SE 2012

Research the 2012 Yamaha YFZ 450R SE Sport with the information in our new ATV Buyer’s Guide. Our buyer’s guide provides new ATV pricing information, photos and colors, specification data and more.

2012 YFZ 450 R SE Engine Specs

Suspension & Steering

View Available Options

Bore (in)	3.74
Bore (mm)	95
Carburetion Brand	Mikuni
Compression Ratio	11.61
Cooling	Liquid / Air
Cylinders	1
Displacement (cc)	449
Displacement (ci)	27.4
Engine Block Heater	Not Available
Engine Configuration	Single-Cylinder
Engine Immobilizer	Not Available
Engine Type	4-Stroke
Fuel Injector	Yes
Fuel Injector Size (mm)	42
Fuel Requirements	Regular
Fuel System Type	Fuel Injected
Snorkel Air Intake	Not Available
Starter	Electric
Stroke (in)	2.5
Stroke (mm)	63.4
Valve Configuration	DOHC
Valves	5
Valves Per Cylinder	5