hey buddy i happen to have a Yamaha TTR250 with 14/44 gearing which is stock and i have tested and achieved 140 kilometres per hour.
hope that helps, i currently have 14/47 gearing which gives a boost to acceleration but lowers top speed to 125kph
Note: I have got knobby tyres and this will decrease top speed.
hope this helps.
A stock Yamaha TTR250 with 14/44 gearing can reach a top speed of 87mph or 143kph.
75 mph to 80 mph is the top speed of Yamaha ttr 250. This is true however you could increase or decrease your top speed by changing sprocket sizes, e.g A stock yamaha ttr250 with 14/44 gearing will reach approximately 140km/h or 87mph. Note i own a Yamaha TTR250 and have tested the bikes top speed.
It goes about 95 miles I know cause i got whone last month... and I have something that tells me how fast it goes. Depending on the gearing you could get 95mph however a stock yamaha TTR250 with 14/44 gearing can reach a top speed of 143km/h or 87mph.
NGK CR9E
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i have a stock sniper 135, the top speed is 130kph.
at top speed it goes about 50-60