2017 Yamaha YFZ450R SE Technical Analysis & Specification Breakdown
Engineered by Yamaha for the atv motorcycle segment, the 2017 Yamaha YFZ450R SE pairs a 449 cc (27.4 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 95.0 x 63.4 mm (3.7 x 2.5 inches) with a 11.8:1 compression ratio.
On the scales, the YFZ450R SE measures 184 kg (406 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 810 mm (31.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,270 mm (50 in) wheelbase engineered for quick, flickable steering geometry. The 10-liter (2.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 12 indexed model years from 2010 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
810 mm (31.9 in)
Engine
Displacement449.0 ccm (27.40 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsTitanium valves
Compression11.8:1
Bore x Stroke95.0 x 63.4 mm (3.7 x 2.5 inches)
Valves/Cylinder5
Fuel SystemInjection. Fuel Injection 42 mm EHS with ISC
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCI
LubricationDry sump
CoolingLiquid
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchSlipper clutch
Chassis
Frame TypeAluminum and steel
Front SuspensionIndependent double wishbone, threaded preload adjustable dual-rate coil-over springs, 3-way adjustable damper, 250 mm wheel travel
Rear SuspensionCast aluminium swingarm, threaded preload adjustable coil-over springs, 3-way adjustable damper, 280 mm wheel travel
Wheelbase1270 mm (50.0 inches)
Ground Clearance115 mm (4.5 inches)
Wheels & Brakes
Front Tyre21/7-10
Rear Tyre20/10-9
Front BrakesDouble disc. Hydraulic. Two-piston calipers.
Rear BrakesSingle disc. Two-piston calipers.
WheelsMaxxi tires
Dimensions & Weight
Weight incl.184.0 kg (405.7 pounds)
Seat Height810 mm (31.9 inches) If adjustable, lowest setting.
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.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
