| Engine |
| Engine type | Liquid cooled, 2-stroke, Single cylinder, Crankcase reed valves |
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| Displacement | 84.7 cc |
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| Bore x stroke | 47.5 x 47.8 mm |
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| Compression ratio | 8.2 : 1 |
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| Maximum power | 21.3 kW (29.0 HP) @ 12,000 rpm |
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| Maximum torque | 17.26 Nm (1.76 kgf-m) @ 10,500 rpm |
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| Lubrication system | Premix |
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| Fuel System | Carburettor (PWK28) |
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| Clutch type | Wet, multiple disc |
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| Ignition system | C.D.I. |
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| Starter system | Kick |
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| Primary reduction ratio | 3.611 |
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| Secundary reduction ratio | 3.428 |
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| Final transmission | Chain |
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| Ratios gearbox 1st | 2.454 |
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| Ratios gearbox 2nd | 1.882 |
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| Ratios gearbox 3rd | 1.529 |
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| Ratios gearbox 4th | 1.294 |
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| Ratios gearbox 5th | 1.130 |
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| Ratios gearbox 6th | 1.000 |
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| Chassis |
| Chassis | Semi-double cradle |
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| Front suspension system | Telescopic fork |
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| Front wheel travel | 275 mm |
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| Rear suspension system | Swinging arm (Monocross) |
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| Rear wheel travel | 282 mm |
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| Caster angle | 26° 18' |
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| Trail | 88 mm |
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| Front brake | Single disc, Ø 198 mm |
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| Rear brake | Single disc, Ø 146 mm |
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| Front tyre | 70/100-17 40M |
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| Rear tyre | 90/100-14 49M |
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| Dimensions |
| Overall length | 1,818 mm |
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| Overall width | 758 mm |
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| Overall height | 1,161 mm |
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| Seat height | 864 mm |
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| Wheelbase | 1,255 mm |
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| Minimum ground clearance | 351 mm |
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| Dry weight | 66 kg |
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| Fuel tank capacity (reserve) | 5 L |
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Specifications and appearance of Yamaha products shown here are subject to change without notice and may vary according to requirements and conditions. For further details please consult your Yamaha dealer.
