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Scooter · 2018

3D-350

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MotoLibrary Score
37 /100 Commuter
Power/Weight
0.12 hp/kg
Torque
29 Nm
Engine
346 ccm

2018 Aeon 3D-350 Technical Analysis & Specification Breakdown

Built around Aeon's scooter motorcycle platform, the 2018 Aeon 3D-350 utilizes a 346 cc (21.1 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 25 HP (18.2 kW) at 7,000 rpm while maximum torque reaches 28.8 Nm (21.2 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a automatic gearbox and chain final drive. With a specific output of 72.3 HP per liter and a 1,500 rpm working window between peak torque (5,500 rpm) and peak power (7,000 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 3D-350 measures 212.5 kg (468 lbs) dry, translating to a power-to-weight ratio of 0.12 HP/kg (8.5 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,565 mm (61.6 in) wheelbase engineered for planted straight-line stability. The 13.5-liter (3.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Aeon archive, this model family spans 2 indexed model years from 2018 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Specific Output
72.3 HP/L
Power-to-Weight
0.12 HP/kg (8.5 kg/HP)
Power Band Window
5,500–7,000 rpm
Standover Height
790 mm (31.1 in)
Engine
Displacement 346.0 ccm (21.11 cubic inches)
Engine Type Single cylinder, four-stroke
Power 25.0 HP (18.2 kW)) @ 7000 RPM
Torque 28.8 Nm (2.9 kgf-m or 21.2 ft.lbs) @ 5500 RPM
Compression 10.6:1
Bore x Stroke 82.0 x 65.5 mm (3.2 x 2.6 inches)
Fuel System Injection. EFI
Ignition Digital
Lubrication Wet sump, Oil pump.
Cooling Liquid
Transmission
Gearbox Automatic
Final Drive Chain (final drive)
Clutch Centrifugal clutch
Driveline CVT
Chassis
Frame Type Steel tube
Front Suspension Hydraulic Tilting System
Rear Suspension Dual-damper unit swing arm
Wheelbase 1565 mm (61.6 inches)
Ground Clearance 190 mm (7.5 inches)
Wheels & Brakes
Front Tyre 110/80-14
Rear Tyre 140/70-15
Front Brakes Single disc. Hydraulic.
Front Brake Ø 240 mm (9.4 inches)
Rear Brakes Single disc. Hydraulic.
Rear Brake Ø 256 mm (10.1 inches)
Dimensions & Weight
Dry Weight 212.5 kg (468.5 pounds)
Power/Weight 0.1176 HP/kg
Seat Height 790 mm (31.1 inches) If adjustable, lowest setting.
Overall Height 1340 mm (52.8 inches)
Overall Length 2270 mm (89.4 inches)
Overall Width 825 mm (32.5 inches)
Fuel Capacity 13.50 litres (3.57 US gallons)
Other
Starter Electric
Color Options Grey
Notes

Two front wheels

More from Aeon
Buying Checklist

Before You Compare This Bike

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.
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.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🏙️
Best For
City & Commuting
📏
Seat Height
79 cm / 31.1 in
⚖️
Handling
Medium weight — some experience needed
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