What category is the 2006 Yamaha TT-R90?

The 2006 Yamaha TT-R90 has a Category of Enduro / offroad.

What is the engine size of the 2006 Yamaha TT-R90?

The 2006 Yamaha TT-R90 has a Capacity: of 89.00 ccm (5.43 cubic inches).

What type of engine does the 2006 Yamaha TT-R90 have?

The 2006 Yamaha TT-R90 has a Engine type of Single cylinder, four-stroke.

What is the engine power of the 2006 Yamaha TT-R90?

The 2006 Yamaha TT-R90 has a Power of 5.49.

What is the torque of the 2006 Yamaha TT-R90?

The 2006 Yamaha TT-R90 has a Torque of 6.10 Nm (0.6 kgf-m or 4.5 ft.lbs).

Is the 2006 Yamaha TT-R90 air cooled or liquid cooled?

The 2006 Yamaha TT-R90 has a Cooling system of Liquid.

How many gears does the 2006 Yamaha TT-R90 have?

The 2006 Yamaha TT-R90 has a Gearbox of 5-speed.

How much does the 2006 Yamaha TT-R90 weigh?

The 2006 Yamaha TT-R90 has a Dry weight of 60.0 kg (132.3 pounds).

What is the seat height of the 2006 Yamaha TT-R90?

The 2006 Yamaha TT-R90 has a Seat height of 625 mm (24.6 inches) If adjustable, lowest setting..

Yamaha TT-R90 - 2006 Specifications and Reviews

Name: 2006 Yamaha TT-R90
Brand: Yamaha

The 2006 Yamaha TT-R90 is an entry-level enduro bike designed for young riders and beginners learning off-road fundamentals. Its lightweight frame and 89cc four-stroke engine deliver manageable power and torque, making it ideal for trail riding and skill development. Known for reliability and easy handling, the TT-R90 remains a popular choice for introducing riders to off-road motorcycling.

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2006

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General information
Category	Enduro / offroad
Year	2006
Model	Yamaha TT-R90
Engine and Transmission Specifications
Clutch	Wet, multiple-disc
Transmission type,final drive	Chain
Gearbox	5-speed
Cooling system	Liquid
Lubrication system	Premix
Ignition	CDI
Fuel control	SOHC
Fuel system	Carburettor. Mikuni TMX38
Bore x stroke	47.0 x 51.8 mm (1.9 x 2.0 inches)
Compression	8.5:1
Torque	6.10 Nm (0.6 kgf-m or 4.5 ft.lbs)
Power	5.49
Engine type	Single cylinder, four-stroke
Capacity:	89.00 ccm (5.43 cubic inches)

Brakes, suspension, Frame and wheels
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 tyre dimensions	90/90-M14
Front tyre dimensions	70/90-M17
Rear suspension travel	125 mm (4.9 inches)
Rear suspension	Swinging arm (monocross)
Front suspension travel	110 mm (4.3 inches)
Front suspension	Telescopic fork

Physical measures and capacities
Fuel capacity	8.00 litres (2.11 gallons)
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.
Power/weight ratio	0.0915 HP/kg
Dry weight	60.0 kg (132.3 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Starter	Kick

Performance Profile & Rider Fit

5.5 hp

Peak Power

Best For

Track5%

City10%

Cornering20%

Daily Riding15%

Touring5%

Passenger0%

Rider Profile

Best For	This is a youth or beginner-level trail bike, ideal for a young or novice rider taking their first steps off-road rather than an experienced adult enthusiast.
Purpose	Designed purely for gentle recreational trail riding and learning basic off-road skills at low speed.
Rider Fit	Its very low 625mm seat height and 60kg weight make it extremely manageable for smaller or lighter riders, including children and teens.
Character	A friendly, non-intimidating small-bore trail bike that prioritizes forgiving, predictable handling over outright performance.
Not Ideal For	This is not suitable for adult highway riding, touring, carrying a passenger, or anyone seeking real speed or power.

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

Rider Fit Visualizer

2006 Yamaha TT-R90 Rider Ergonomics Assessment

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Feet:

At 625mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2006 Yamaha TT-R90, with a cramped knee angle of around 50 degrees and an upright riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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