The Yamaha TT-R 90 motorcycle specifications include a 89 cc (5.43 cu in) engine and a listed weight of 60 kg (132.3 lb).
Key specifications
The 2002 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Yamaha TT-R 90 compares
This compares the motorcycle with all Yamaha models in this specifications database. The blue marker is this model and the grey line is the Yamaha database average.
About 84% lower than the Yamaha database average. Around the 11th percentile across Yamaha models.
About 21% lower than the Yamaha database average. Around the 2nd percentile across Yamaha models.
Yamaha database percentile rankings
Percentiles show where this motorcycle sits across the Yamaha specifications database. They are descriptive database rankings, not performance ratings.
89 cc — larger displacement than about 11% of Yamaha models.
625 mm — taller than about 2% of Yamaha models.
Dimensions compared with Yamaha average
Each measurement is compared with the average value across Yamaha models where that dimension is available.
1,525
2,082
27% below average.
605
823
27% below average.
865
1,172
26% below average.
1,040
1,416
27% below average.
625
793
21% below average.
157
181
13% below average.
Mechanical overview
Additional useful specifications
| Bore/stroke ratio | 0.91:1 (Undersquare) |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 89 cc (5.43 cu in) |
| Torque | 6.1 Nm (0.6 kgf-m or 4.5 ft.lbs) @ 4,000 rpm |
| Bore × stroke | 47.0 x 51.8 mm (1.9 x 2.0 inches) |
| Compression ratio | 8.5:1 |
| Cooling system | Liquid |
| Fuel control | Single Overhead Cams (SOHC) |
Chassis and suspension
| Front wheel travel | 110 mm (4.3 inches) |
|---|---|
| Rear wheel travel | 95 mm (3.7 inches) |
Brakes, wheels and tires
| Front brakes | Expanding brake |
|---|---|
| Rear brakes | Expanding brake |
Dimensions and weight
| Dry weight | 60 kg (132.3 lb) |
|---|---|
| Seat height | 625 mm (24.6 inches) |
| Overall length | 1,525 mm (60.0 inches) |
| Overall width | 605 mm (23.8 inches) |
| Overall height | 865 mm (34.1 inches) |
| Wheelbase | 1,040 mm (40.9 inches) |
| Ground clearance | 157 mm (6.2 inches) |
Performance
| Power/weight ratio | 0.0933 hp/kg |
|---|
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Yamaha models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Yamaha information before relying on them. Visit the official Yamaha website.