Built around Honda's scooter motorcycle platform, the 2021 Honda SH350i pairs a 329.2 cc (20.1 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 29 HP (21.1 kW) at 7,500 rpm while maximum torque reaches 32 Nm (23.6 lb-ft) at 5,250 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 88.1 HP per liter and a 2,250 rpm working window between peak torque (5,250 rpm) and peak power (7,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the SH350i measures 174 kg (384 lbs) wet (curb), translating to a power-to-weight ratio of 0.17 HP/kg (6 kg per horsepower). Rider ergonomics and chassis geometry center around a 805 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,452 mm (57.2 in) wheelbase engineered for balanced agility and highway composure. The 9.1-liter (2.4 US gal) fuel tank paired with a rated consumption of 2.5 L/100 km provides an estimated theoretical range of roughly 364 km (226 miles) between fill-ups, while factory top speed is listed at 128 km/h (80 mph).
Within MotoLibrary's Honda archive, this model family spans 3 indexed model years from 2021 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
88.1 HP/L
Power-to-Weight
0.17 HP/kg (6 kg/HP)
Power Band Window
5,250–7,500 rpm
Theoretical Range
~364 km (226 mi)
Engine
Displacement329.2 ccm (20.09 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power29.0 HP (21.1 kW)) @ 7500 RPM
Torque32.0 Nm (3.3 kgf-m or 23.6 ft.lbs) @ 5250 RPM
Compression10.5:1
Bore x Stroke77.0 x 70.7 mm (3.0 x 2.8 inches)
Valves/Cylinder4
Fuel SystemInjection. PGM-FI
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionDigital transistorised with electronic advance
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineV-matic
Performance
Top Speed128.0 km/h (79.5 mph)
Fuel Consumption2.50 litres/100 km (40.0 km/l or 94.09 mpg)
Greenhouse Gases58.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 5
Chassis
Frame TypeTubular steel underbone
Rake27.5°
Trail98 mm (3.9 inches)
Front Suspension35mm telescopic fork
Rear SuspensionDual-damper unit swingarm
Wheelbase1452 mm (57.2 inches)
Ground Clearance131 mm (5.2 inches)
Wheels & Brakes
Front Tyre110/70-16
Rear Tyre130/70-16
Front BrakesSingle disc. Hydraulic disc with two piston caliper drilled rotor and resin mould pads, ABS
Front Brake Ø256 mm (10.1 inches)
Rear BrakesSingle disc. HHdraulic disc with single-piston caliper, and resin mould pads, ABS
Rear Brake Ø256 mm (10.1 inches)
WheelsU-section 6-spoke cast aluminium
Dimensions & Weight
Weight incl.174.0 kg (383.6 pounds)
Seat Height805 mm (31.7 inches) If adjustable, lowest setting.
Overall Height1161 mm (45.7 inches)
Overall Length2160 mm (85.0 inches)
Overall Width742 mm (29.2 inches)
Fuel Capacity9.10 litres (2.40 US gallons)
Oil Capacity1.90 litres (2.01 US quarts)
Other
StarterElectric
Color OptionsMat Ruthenium Silver Metallic, Mat Carnelian Red Metallic
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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
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.