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Scooters

2021Yamaha Smax

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The 2021 Yamaha Smax is a stylish 155cc automatic scooter designed for urban commuters seeking practical daily transportation with modern appeal. Its liquid-cooled engine and efficient belt-drive transmission deliver smooth, economical performance ideal for city riding. Known for its contemporary design and user-friendly nature, it suits riders prioritizing convenience and versatility over raw power.

Capacity
155.0 ccm
Engine
Single, four-stroke
Gearbox
Not on record
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Wet weight
148.8 kg
Seat height
795 mm
Power
16.0 HP (11.8 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2021 Yamaha Smax

vs the 2020
Spec20202021
Torque 13.7 Nm (1.4 kgf-m or 10.1 ft.lbs) @ 6000 RPM not listed
Rear suspension Mid ship horizontal positioned rear shock Mid ship horizontal positioned shock
Other years 2015 2016 2017 2018 2019 2020 2021 2022

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 24Agility 69Comfort 65Off-road 5Touring 30Road manners 60
Off-road & trail5%
Cornering45%
City riding90%
Daily riding85%
Touring30%
Two-up55%
Track5%
Best for
Designed primarily as a stylish, practical commuter scooter for weaving through urban traffic and short errands.
Built for
A fun, big-wheeled maxi-style scooter that blends everyday practicality with a sportier stance than typical commuter scooters.
Not ideal for
Not a good fit for riders wanting highway touring comfort, high-speed performance, or any off-road capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 795mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 Yamaha Smax, with a moderate knee angle of around 105 degrees and a slightly forward riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Range and running costs

Worked out in your browser - nothing is sent to us

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine
Capacity
155.0 ccm
Power
16.0 HP (11.8 kW)
CO2 Emissions
67 CO2 g/km
Engine type
Single, four-stroke
Fuel consumption
2.90 litres/100 km (34.5 km/l)
Power/weight ratio
0.1075 HP/kg (wet)
Bore x stroke
58.0 x 58.7 mm
Compression
11.0:1
Cooling system
Liquid
Fuel system
Injection
Starting
Electric
Ignition
TCI
Valves per cylinder
4
Transmission
Transmission type
Automatic
Final drive
Belt
Dimensions & weight
Wheelbase
1405 mm
Overall length
2029 mm
Overall width
714 mm
Overall height
1295 mm
Seat height
795 mm
Wet weight
148.8 kg
Fuel capacity
7.60 litres
Oil capacity
1.50 litres
Carrying capacity
32-liter underseat storage
Dry weight
Not on record - add it
Chassis & suspension
Front suspension
Telescopic fork
Rear suspension
Mid ship horizontal positioned shock
Front wheel travel
79 mm
Rear wheel travel
94 mm
Rake (fork angle)
26.0°
Trail
82 mm
Brakes & wheels
Front brakes
Single disc. Hydraulic.
Front brakes diameter
267 mm
Rear brakes
Single disc. Hydraulic.
Rear brakes diameter
245 mm
Front tyre
120/70-13
Rear tyre
130/70-13
Other
Color options
Candy Red
Warranty
12
Comments
Windscreen.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 201520172019202020212022
Capacity 155 cc 155 cc 155 cc 155 cc 155 cc 155 cc
Seat height 795 mm 795 mm 795 mm 795 mm 795 mm 795 mm
Fuel capacity 7.6 L 7.6 L 7.6 L 7.6 L 7.6 L 7.6 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

I recently had the chance to test ride the 2021 Yamaha Smax and I was incredibly impressed with its performance. The 155cc engine delivers smooth and responsive power, making it a joy to ride in both city traffic and on the highway. The Smax's lightweight and nimble handling also make it easy to maneuver through urban streets, while still feeling stable at higher speeds. The comfortable seat and ample storage space under the seat make it a practical choice for daily commuting or longer rides, and the sleek design adds a touch of style to the overall package.

Overall, the 2021 Yamaha Smax is a fantastic option for riders who are looking for a versatile and reliable scooter. Its combination of power, agility, and practicality make it a top choice in its class. Whether you're a new rider or an experienced one, the Smax offers a smooth and enjoyable riding experience that is sure to impress. With its impressive performance and stylish design, the Smax is a standout option in the scooter market for 2021.

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Common questions

What is the engine size of the Yamaha Smax?

The 2021 Yamaha Smax has a Capacity of 155.0 ccm (9.46 cubic inches).

What engine power does the Yamaha Smax have?

The 2021 Yamaha Smax has a Power of 16.0 HP (11.8 kW).

How much does the Yamaha Smax weigh?

The 2021 Yamaha Smax has a Wet weight of 148.8 kg (328.0 pounds).

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