Built around Yamaha's atv motorcycle platform, the 2012 Yamaha Grizzly 125 Automatic pairs a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 49.0 x 66.0 mm (1.9 x 2.6 inches) with a 9.0:1 compression ratio.
On the scales, the Grizzly 125 Automatic measures 152 kg (335 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 686 mm (27 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,080 mm (42.5 in) wheelbase engineered for quick, flickable steering geometry. The 7.57-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 4 indexed model years from 2009 to 2015, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
686 mm (27 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression9.0:1
Bore x Stroke49.0 x 66.0 mm (1.9 x 2.6 inches)
Fuel SystemCarburettor. Mikuni 18mm
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionDC - CDI
CoolingAir
Transmission
GearboxAutomatic
Final DriveChain (final drive)
Driveline2WD; O-ring chain
Chassis
Front SuspensionIndependent wishbone, 2.8-in travel
Rear SuspensionSwingarm, 3.2-in travel
Wheelbase1080 mm (42.5 inches)
Ground Clearance145 mm (5.7 inches)
Wheels & Brakes
Front Tyre20/7-8
Rear Tyre22/10-8
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Weight incl.152.0 kg (335.0 pounds)
Seat Height686 mm (27.0 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.
