14 August. Friday 2026
Yamaha Byson FI - 2021 Specifications and Reviews
The 2021 Yamaha Byson FI is a lightweight naked bike designed for commuters and new riders seeking affordable, reliable daily transportation. Powered by a 150cc single-cylinder four-stroke engine with fuel injection, it delivers modest performance ideal for city riding and modest highway cruising. Known for its practical diamond frame, comfortable ergonomics, and excellent fuel economy, the Byson FI excels as an entry-level bike in developing markets.
General information | |
| Category | Naked bike |
| Year | 2021 |
| Model | Yamaha Byson FI |
Engine and Transmission Specifications | |
| Clutch | Wet, multipate |
| Cooling system | Air |
| Fuel control | Single Overhead Cams (SOHC) |
| Fuel system | Injection |
| Bore x Stroke | 57.3 x 57.9 mm (2.3 x 2.3 inches) |
| Compression | 9.5:1 |
| Torque | 13.0 Nm (1.3 kgf-m or 9.6 ft.lbs) @ 6000 RPM |
| Power | 12.9 HP (9.4 kW) @ 8000 RPM |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 150.0 ccm (9.15 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes | Single disc |
| Rear tire | 130/70-17 |
| Front tire | 100/80-17 |
| Rear Suspension | Swingarm |
| Front Suspension | Telescopic |
| Frame type | Diamond |
Physical measures and capacities | |
| Fuel capacity | 12.00 litres (3.17 US gallons) |
| Wheelbase | 1340 mm (52.8 inches) |
| Ground clearance | 170 mm (6.7 inches) |
| Overall width | 780 mm (30.7 inches) |
| Overall length | 1990 mm (78.3 inches) |
| Overall height | 1045 mm (41.1 inches) |
| Seat height | 790 mm (31.1 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 133.0 kg (293.2 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Sold in Asia |
| Starter | Electric & kick |
| Color options | Matte Red, Matte Brown, Matte Grey |
Performance Profile & Rider Fit
12.9 hp
Peak Power
Best For
Track15%
City85%
Cornering55%
Daily Riding80%
Touring28%
Passenger35%
Rider Profile
| Best For | This is an ideal machine for beginners and new riders building confidence in traffic and low-speed maneuvers. |
| Purpose | It's built primarily as a lightweight, affordable commuter naked bike for city streets rather than performance riding. |
| Rider Fit | Its low seat height and light weight make it easy for shorter or less physically strong riders to handle confidently. |
| Character | The Byson FI has a simple, no-frills, muscular-looking naked bike character with modest single-cylinder performance. |
| Not Ideal For | This is not the bike for riders seeking highway touring comfort, high top speed, or serious off-road capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 Yamaha Byson FI motorcycle is a powerful and reliable option for riders looking for a smooth and efficient ride. With its fuel injection technology, this motorcycle delivers excellent fuel efficiency and responsive performance. The sleek and modern design of the Byson FI makes it stand out on the road, while its comfortable seating and ergonomic handlebars provide a pleasant riding experience. The 2021 Yamaha Byson FI motorcycle is an impressive option for riders who value both style and functionality. Its advanced fuel injection system ensures optimal fuel efficiency and smooth acceleration, while its modern design and comfortable features make it a joy to ride. Whether you're commuting in the city or cruising on the open road, the Byson FI is a versatile and dependable choice for motorcycle enthusiasts.Add a Comment
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