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
| Price | $1,749 |
| Engine | Air-cooled, four-stroke |
| Displacement | 89cc |
| Transmission | 3-Speed semi-automatic |
| Power | 5.36 hp @ 7,000 rpm |
| Seat Height | 24.6 inches |
| Curb Weight | 139 lb |
| Fuel Tank Capacity | 1.1 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.
Dimensions
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.
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Yamaha TTR 90 Specifications
Engine & Transmission
| Engine Type | 1-Cylinder, 4-Stroke, SOHC |
| Engine Displacement | 89 cc |
| No. of Cylinders | 1 |
| Fuel Type | Gasoline |
| Fuel Supply | 16 mm Mikuni carburetor |
| Cooling System | Air-cooled |
| Bore | 47 mm |
| Stroke | 51.8 mm |
| Compression Ratio | 8.5:1 |
| Valves Per Cylinder | 2 |
| Starting | Electric |
| Ignition | CDI |
| Transmission | 3-Speed semi-automatic |
| Clutch | Automatic |
| Final Drive | Chain |
Top Speed Performance, & Mileage
| Power | 5.36 hp @ 7,000 rpm |
| Torque | 6.1 Nm @ 4,000 rpm |
| Top Speed | Yamaha TTR 90 top speed is 90 mph |
| Mileage | Not Available |
Chassis & Suspension
| Body Type | Trail bike |
| Chassis | Steel frame |
| Front Suspension | 26 mm Telescopic forks |
| Rear Suspension | Single rear shock absorber |
| Front Wheel Travel | 4.3 inches |
| Rear Wheel Travel | 3.7 inches |
Brakes, Wheels, & Tires
| Front Brake | Expanding drum brake |
| Rear Brake | Expanding drum brake |
| Front Brake Diameter | 95 mm |
| Rear Brake Diameter | 100 mm |
| ABS | No |
| Front Wheel | 14 Inch spoke rims |
| Rear Wheel | 12 Inch spoke rims |
| Tire Type | Tubed |
| Front Tire Size | 2.50-14 |
| Rear Tire Size | 3.00-12 |
Dimension & Capacity
| Wheelbase | 40.9 inches |
| Length | 60 inches |
| Width | 23.8 inches |
| Height | 34.1 inches |
| Seat Height | 24.6 inches |
| Ground Clearance | 6.3 inches |
| Curb Weight | 139 lb |
| Fuel Tank Capacity | 1.1 gal |
| Seating Capacity | 1 |
| Trail | 2.2 inches |
Electricals & Lighting
| Battery Type | Low-maintenance |
| Battery Capacity | 12V |
| Headlight | No |
| Pilot Lights | No |
| Taillights | No |
| Turn Signals | No |
| Pass Light | No |
Instrument Console & Speedometer
| Console Type | No instrument console |
| Speedometer | No |
| Tachometer | No |
| Odometer | No |
| Trip Meter | No |
| No. of Trip Meters | No |
| Fuel Gauge | No |
| Gear Shift Light | No |
| Gear Position Indicator | No |
| Low Fuel Indicator | No |
| Engine Temperature Indicator | No |
| Service Indicator | No |
Other Features
| Electric Starter | Yes |
| Engine kill Switch | No |
| Stand Alarm | No |
| Stepped Seat | No |
| Pillion Seat | No |
| Pillion Grabrails | No |
| Pillion Footrest | No |
| Underseat Storage | No |
| Additional Features | Air 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
Yes, the TTR 90 comes with a four-stroke, air-cooled engine with a single-cylinder setup.
It comes with an automatic clutch system.
it has a seat height of 24.6 inches.
The TTR 90 comes with an electric starter and it gets a low-maintenance CDI ignition system.
