Two-stroke engines are notable over equivalent four-strokes in that they are lighter, mechanically simpler, produce higher power-weight. In the USA, two-stroke road-bikes are appearing to be less common due to emissions standards. Most 2-stroke bikes are under 500cc. 2-stroke engines have a more pronounced powerband (than 4-strokes) although some exhaust power-value systems can extend the band.
CR250R (Honda) | |
|---|---|
 | Amazing supercross racer with balance of handling and power. |
A50 (Suzuki) | |
|---|---|
Baby of the A series. | |
A95 (Suzuki) | |
|---|---|
European-only model? | |
NSR125 (Honda) | |
|---|---|
Amazing little pocket rocket sports bikes. | |
RD200 (Yamaha) | |
|---|---|
 | No information. See comments for rest of RD family models. |
TC100 (Suzuki) | |
|---|---|
high and low range ratio gearbox | |
GT250 (Suzuki) | |
|---|---|
 | In its day one of the popular 250s. Generally very reliable. Sometimes had gearbox problems, instruments went 'cloudy' almost straight away, rear sprockets were soft and wore out quickly. If in good condition, should be ideal as a first bike, but maybe not worth $1000. Maybe half that? Age is against it. |
A100 (Suzuki) | |
|---|---|
 | A very pretty bike. |
TZ50 (Yamaha) | |
|---|---|
 | Tiny racer. |
CZ250 (Jawa-Cz) | |
|---|---|
 | twin made in Czechoslovakia. mid-70s and parts are hard. Good for the classic clubs. 15kW, 140kg, 135 km/hr |
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