Engineered by Suzuki for the atv motorcycle segment, the 2018 Suzuki QuadSport Z90 utilizes a 90 cc (5.5 cu in) air-cooled single cylinder, four-stroke layout. Internal engine geometry specifies a bore and stroke of 45.5 x 55.2 mm (1.8 x 2.2 inches) with a 9.2:1 compression ratio.
On the scales, the QuadSport Z90 measures 127 kg (280 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 650 mm (25.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,030 mm (40.6 in) wheelbase engineered for quick, flickable steering geometry. The 6-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Suzuki archive, this model family spans 10 indexed model years from 2009 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
650 mm (25.6 in)
Engine
Displacement90.0 ccm (5.49 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression9.2:1
Bore x Stroke45.5 x 55.2 mm (1.8 x 2.2 inches)
Fuel SystemCarburettor. Mikuni VM16
Fuel ControlOverhead Cams (OHC)
IgnitionCDI
LubricationWet sump
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Driveline2WD, Chain RK530 with 60 links
Chassis
Front SuspensionIndependent single A-arm, oil-damped, coil-sprung
Rear SuspensionSwing arm, oil-damped, coil-sprung
Wheelbase1030 mm (40.6 inches)
Ground Clearance150 mm (5.9 inches)
Wheels & Brakes
Front Tyre19/7-8
Rear Tyre19/7-8
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Weight incl.127.0 kg (280.0 pounds)
Seat Height650 mm (25.6 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.
