Enduro Bikes
2004Yamaha TT-R90
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The 2004 Yamaha TT-R90 is a youth trail bike designed for children learning to ride off road. Its air-cooled 89cc four-stroke single makes 5.6 hp and 6.1 Nm through a five-speed gearbox. A very low 625 mm seat and 60 kg dry weight make it easy to handle.
- Capacity
- 89.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 60.0 kg
- Seat height
- 625 mm
- Power
- 5.6 HP (4.1 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily for off-road trail riding, with enough road manners to link trails where it is road-legal.
- Built for
- An enduro bike from Yamaha with an 89cc engine; its character is easy-going and economical, with 6 hp on tap.
- Not ideal for
- Not for long road journeys, passengers or motorway riding.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 89.0 ccm
- Power
- 5.6 HP (4.1 kW)
- Torque
- 6.1 Nm (0.6 kgf-m) @ 4000 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0933 HP/kg (dry)
- Bore x stroke
- 47.0 x 51.8 mm
- Compression
- 8.5:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Kick
- Ignition
- CDI
- Lubrication system
- Premix
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multiple-disc
Dimensions & weight
- Wheelbase
- 1040 mm
- Overall length
- 1525 mm
- Overall width
- 605 mm
- Overall height
- 865 mm
- Seat height
- 625 mm
- Dry weight
- 60.0 kg
- Fuel capacity
- 8.00 litres
- Ground clearance
- 157 mm
Chassis & suspension
- Frame
- Steel tube backbone
- Front suspension
- Telescopic fork
- Rear suspension
- Swinging arm (monocross)
- Front wheel travel
- 110 mm
- Rear wheel travel
- 95 mm
Brakes & wheels
- Front brakes
- Expanding brake
- Front brakes diameter
- 95 mm
- Rear brakes
- Expanding brake
- Rear brakes diameter
- 110 mm
- Front tyre
- 70/90-M17
- Rear tyre
- 90/90-M14
Specs last verified against published sources: .
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 |
|---|---|---|---|---|---|---|
| Capacity | 89 cc | 89 cc | 89 cc | 89 cc | 89 cc | 89 cc |
| Dry weight | 60 kg | 60 kg | 60 kg | 60 kg | 60 kg | 60 kg |
| Seat height | 625 mm | 625 mm | 625 mm | 625 mm | 625 mm | 625 mm |
| Fuel capacity | 8 L | 8 L | 8 L | 8 L | 8 L | 4.2 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha TT-R90?
The 2004 Yamaha TT-R90 has a Capacity of 89.0 ccm (5.43 cubic inches).
What engine power does the Yamaha TT-R90 have?
The 2004 Yamaha TT-R90 has a Power of 5.6 HP (4.1 kW).
How many gears does the Yamaha TT-R90 have?
The 2004 Yamaha TT-R90 has a Gearbox of 5-speed.
What is the torque of the Yamaha TT-R90?
The 2004 Yamaha TT-R90 has a Torque of 6.1 Nm (0.6 kgf-m or 4.5 ft.lbs) @ 4000 RPM.
How much does the Yamaha TT-R90 weigh?
The 2004 Yamaha TT-R90 has a Dry weight of 60.0 kg (132.3 pounds).
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