What category is the 2004 Yamaha TT-R90 E?

The 2004 Yamaha TT-R90 E has a Category of Minibike, cross.

What is the engine size of the 2004 Yamaha TT-R90 E?

The 2004 Yamaha TT-R90 E has a Capacity: of 89.00 ccm (5.43 cubic inches).

What type of engine does the 2004 Yamaha TT-R90 E have?

The 2004 Yamaha TT-R90 E has a Engine type of Single cylinder.

What is the engine power of the 2004 Yamaha TT-R90 E?

The 2004 Yamaha TT-R90 E has a Power of 5.49.

What is the torque of the 2004 Yamaha TT-R90 E?

The 2004 Yamaha TT-R90 E has a Torque of 6.10.

Is the 2004 Yamaha TT-R90 E air cooled or liquid cooled?

The 2004 Yamaha TT-R90 E has a Cooling system of Liquid.

How much does the 2004 Yamaha TT-R90 E weigh?

The 2004 Yamaha TT-R90 E has a Dry weight of 60.0 kg (132.3 pounds).

What is the seat height of the 2004 Yamaha TT-R90 E?

The 2004 Yamaha TT-R90 E has a Seat height of 625 mm (24.6 inches) If adjustable, lowest setting..

Yamaha TT-R90 E - 2004 Specifications and Reviews

Name: 2004 Yamaha TT-R90 E
Brand: Yamaha

The 2004 Yamaha TT-R90 E is a lightweight minibike designed for young riders and beginners learning fundamental motorcycle skills. Its compact 89cc liquid-cooled engine delivers manageable power while the low 625mm seat height and 60kg weight ensure accessibility. Built for off-road exploration and trail riding, it combines reliability with user-friendly handling.

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2004

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General information
Category	Minibike, cross
Year	2004
Model	Yamaha TT-R90 E

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Cooling system	Liquid
Fuel control	SOHC
Bore x stroke	47.0 x 51.8 mm (1.9 x 2.0 inches)
Compression	8.5:1
Torque	6.10
Power	5.49
Stroke	4
Engine type	Single cylinder
Capacity:	89.00 ccm (5.43 cubic inches)

Physical measures and capacities
Wheelbase	1,040 mm (40.9 inches)
Ground clearance	172 mm (6.8 inches)
Overall width	605 mm (23.8 inches)
Overall length	1,525 mm (60.0 inches)
Overall height	865 mm (34.1 inches)
Seat height	625 mm (24.6 inches) If adjustable, lowest setting.
Dry weight	60.0 kg (132.3 pounds)
Yamaha TT-R90 E dimensions and frame
Rear brakes diameter	110 mm (4.3 inches)
Rear brakes	Expanding brake (drum brake)
Front brakes diameter	95 mm (3.7 inches)
Front brakes	Expanding brake (drum brake)
Rear suspension travel	95 mm (3.7 inches)
Rear suspension	Swinging arm (monocross)
Front suspension travel	110 mm (4.3 inches)
Front suspension	Telescopic fork
Speed and acceleration
Power/weight ratio	0.0915 HP/kg
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Color options	Blue

Performance Profile & Rider Fit

5.5 hp

Peak Power

Best For

Track5%

City10%

Cornering20%

Daily Riding5%

Touring3%

Passenger2%

Rider Profile

Best For	This is a beginner-focused youth trail bike, ideal for kids or very small novice riders taking their first steps off-road.
Purpose	Built purely for light, low-speed recreational trail riding and learning basic off-road skills in a safe, controlled way.
Rider Fit	Its low seat height and light dry weight make it extremely accessible for small-statured or young riders.
Character	A gentle, forgiving, and non-intimidating machine that prioritizes control and confidence-building over performance.
Not Ideal For	Not suitable for adult-sized riders, highway use, touring, or anyone seeking real speed or power.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.