2008 Big Dog Mastiff Technical Analysis & Specification Breakdown
Built around Big Dog's custom - cruiser motorcycle platform, the 2008 Big Dog Mastiff pairs a 1916 cc (116.9 cu in) air-cooled v2, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 104.8 x 111.1 mm (4.1 x 4.4 inches) with a 9.6:1 compression ratio.
On the scales, the Mastiff measures 321.1 kg (708 lbs) dry. Rider ergonomics and chassis geometry center around a 616 mm (24.3 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,969 mm (77.5 in) wheelbase engineered for planted straight-line stability. The 17.78-liter (4.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Big Dog archive, this model family spans 4 indexed model years from 2008 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
616 mm (24.3 in)
Engine
Displacement1916.0 ccm (116.91 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Compression9.6:1
Bore x Stroke104.8 x 111.1 mm (4.1 x 4.4 inches)
Valves/Cylinder2
Fuel SystemCarburettor. Also availbale with electronic injection.
Fuel ControlOverhead Valves (OHV)
IgnitionElectronic Single Fire
CoolingAir
Transmission
Gearbox6-speed
Final DriveBelt (final drive)
Chassis
Rake39.0°
Trail122 mm (4.8 inches)
Front SuspensionTelescopic
Rear SuspensionHidden shocks
Wheelbase1969 mm (77.5 inches)
Ground Clearance102 mm (4.0 inches)
Wheels & Brakes
Front Tyre120/70-21
Rear Tyre300/35-18
Front BrakesSingle disc. 4-piston
Rear BrakesSingle disc. 4-piston
Dimensions & Weight
Dry Weight321.1 kg (708.0 pounds)
Seat Height616 mm (24.3 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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
