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Yamaha TTR 90

Yamaha TTR 90 Specs, Top Speed, & Price in 2024

The Yamaha TTR 90 is a trail bike for the brand sold until 2007. It is powered by an 89cc air-cooled, single-cylinder, four-stroke engine. It comes with an uncomplicated 3-speed semi-automatic transmission and it also gets an electric starter. The compact engine of the TTR 90 offer unintimidating power and it is also very lightweight which makes it easier to control. It acquires its design and styling cues from the bigger Yamaha TTR 230.

Yamaha TTR 90 Top Speed, Specs, Seat Height, & Price

Key Specifications

Engine Air-cooled, four-stroke
Transmission 3-Speed semi-automatic
Power5.36 hp @ 7,000 rpm
Seat Height24.6 inches
Curb Weight139 lb
Fuel Tank Capacity1.1 gal

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Top Features

  • Compact design with a lightweight frame
  • 26 mm Telescopic forks
  • Single rear shock absorber
  • Front and rear drum brakes
  • 14-Inch spoke rim front wheel
  • 12-Inch spoke rim rear wheel
  • Competition-style flat seat
  • High ground clearance
  • 4-Stroke, air-cooled, single-cylinder engine
  • 3-Speed semi-automatic transmission
  • Automatic clutch
  • 16 mm Mikuni carburetor
  • CDI ignition system
  • Chain type final drive

Yamaha TTR 90 Review

Engine & Transmission

The Yamaha TTR 90 comes with an 89cc, single-cylinder, four-stroke engine that uses a simple air-cooling system. It relies on a 16 mm Mikuni carburetor for the fuel delivery duty. Its compression ratio is 8.5:1 and it comes with a single overhead camshaft. This trail bike gets a CDI ignition system and Yamaha has also equipped it with an electric starter. The 3-speed semi-automatic gearbox on the TTR 90 help younger rider sharpen their skills without many complications. It comes with an automatic clutch as seen on the Honda Ruckus which enables hassle-free riding.

Yamaha TTR 90 Top Speed, Power, & Performance

The single-cylinder powerplant of this trail bike churns out 5.36 hp @ 7,000 rpm and 6.1 Nm @ 4,000 rpm. Its compact motor delivers unassertive performance that makes it a perfect platform for youngsters to master their off-roading skills. The Yamaha TTR 90 top speed is claimed to be around 40 mph. The Mikuni carburetor offers a crisp throttle response and it ensures a predictable power delivery. Its CD ignition system is low maintenance and reliable.

Body & Suspension

It comes with Team Yamaha-inspired paint scheme and graphics that is seen on its bigger motocrosser siblings, the Yamaha YZ250. The Yamaha TTR 90 gets a 26 mm telescopic suspension at the front and a single shock absorber at the rear. Its front fork offers 4.3 inches of travel while its rear shock absorber offers 3.7 inches of travel. The suspension setup on this trail bike helps it deliver confidence-inspiring control.

Brakes & Wheels

The Yamaha TTR 90 gets front and rear drum brakes that offer requisite stopping power. It is fitted with durable and lightweight spoke rim wheels. It gets a 14-inch front wheel and a 12-inch rear wheel. This dirt bike is equipped with knobby tires that offer amazing grip and wear. The front tire size of the TTR 90 is 2.50-14 and its rear tire size is 3.00-12.


This trail bike is quite compact in size and it measures only 60 inches in length. It has a shorter wheelbase of only 40.9 inches which helps it achieve agile and predictable handling. The TTR 90 comes with a long motocross-style seat like the Yamaha YZ125 and it has a low seat height of only 24.6 inches. It offers a ground clearance of 6.3 inches that helps it tackle rough terrains. The Yamaha TTR 90 has a curb weight of 139 lb and its fuel tank capacity is 1.1 gallons.

Yamaha TTR 90 Pricing & Competiton

The last generation model of the TTR 90 was launched in 2007 before being discontinued. The Yamaha TTR 90 carried a price tag of $1,749 when it was sold in the united states. The major competitors of the TTR 90 are Honda CRF110F, Kawasaki KLX 110R, and Yamaha PW80.

Related Bikes

Kawasaki KLX 110RKawasaki KLX 110R
Yamaha TW200Yamaha TW200

Yamaha TTR 90 Specifications

Engine & Transmission

Engine Type1-Cylinder, 4-Stroke, SOHC
Engine Displacement89 cc
No. of Cylinders1
Fuel TypeGasoline
Fuel Supply16 mm Mikuni carburetor
Cooling SystemAir-cooled
Bore 47 mm
Stroke51.8 mm
Compression Ratio8.5:1
Valves Per Cylinder2
Starting Electric
Ignition CDI
Transmission 3-Speed semi-automatic
Final DriveChain

Top Speed Performance, & Mileage

Power 5.36 hp @ 7,000 rpm
Torque6.1 Nm @ 4,000 rpm
Top SpeedYamaha TTR 90 top speed is 90 mph
MileageNot Available

Chassis & Suspension

Body TypeTrail bike
ChassisSteel frame
Front Suspension26 mm Telescopic forks
Rear Suspension Single rear shock absorber
Front Wheel Travel4.3 inches
Rear Wheel Travel3.7 inches

Brakes, Wheels, & Tires

Front BrakeExpanding drum brake
Rear BrakeExpanding drum brake
Front Brake Diameter95 mm
Rear Brake Diameter100 mm
Front Wheel14 Inch spoke rims
Rear Wheel12 Inch spoke rims
Tire TypeTubed
Front Tire Size2.50-14
Rear Tire Size3.00-12

Dimension & Capacity

Wheelbase 40.9 inches
Length 60 inches
Width23.8 inches
Height34.1 inches
Seat Height 24.6 inches
Ground Clearance6.3 inches
Curb Weight 139 lb
Fuel Tank Capacity1.1 gal
Seating Capacity1
Trail2.2 inches

Electricals & Lighting

Battery TypeLow-maintenance
Battery Capacity12V
Pilot LightsNo
Taillights No
Turn Signals No
Pass LightNo

Instrument Console & Speedometer

Console TypeNo instrument console
Trip MeterNo
No. of Trip MetersNo
Fuel GaugeNo
Gear Shift LightNo
Gear Position Indicator No
Low Fuel Indicator No
Engine Temperature IndicatorNo
Service Indicator No

Other Features

Electric StarterYes
Engine kill SwitchNo
Stand Alarm No
Stepped SeatNo
Pillion SeatNo
Pillion GrabrailsNo
Pillion Footrest No
Underseat StorageNo
Additional FeaturesAir cooling, swingarm linked rear shock absorber

Conclusion On the Yamaha TTR 90

The TTR 90 is now sadly discontinued and replaced with the all-new TTR-110E. It was one of the most loved trail bikes during its time. Its low-maintenance engine offers smooth power delivery that makes it very easy to ride. The simple 3-speed gearbox with an automatic clutch is an added convenience for novice riders. The compact design, lightweight chassis, and smooth engine made the Yamaha TTR 90 a perfect platform for teenage riders to hone their riding skills.

Frequently Asked Questions

Is the Yamaha TTR 90 four-stroke?

Yes, the TTR 90 comes with a four-stroke, air-cooled engine with a single-cylinder setup.

Does the TTR 90 have a clutch?

It comes with an automatic clutch system.

What is the seat height of the Yamaha TTR 90?

it has a seat height of 24.6 inches.

Does the TTR 90 have an electric starter?

The TTR 90 comes with an electric starter and it gets a low-maintenance CDI ignition system.

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