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Old 20 Oct 2011, 07:31 am
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Default i have just brought a honda xr 125, its to slow and wondered what i could do to speed it up in

any way? i have just brought a honda xr 125, its to slow and wondered what i could do to speed it up in any way? acceleration is good but want more top end, what can i do and how much will it cost? or should i just put a bigger engine in it? thanks
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Old 20 Oct 2011, 07:46 am
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gearing is the key try a one tooth smaller sprocket on the engine is the cheapest and will add about 3-5 mph and cost around $20 and 30 minutes time
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Old 20 Oct 2011, 08:01 am
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One tooth smaller sprocket will take away from top end.. he wants more top end. but changing gearing will add one thing and take another away. putting a bigger sprocket on the engine will add more top end and take away acceleration. visa versa when putting a smaller sprocket on the front.. You can spend LOTS of money on the engine to give it power but i would just get a bigger bike. 250 2 stroke has more power than anyone needs.. If your looking for a 4 stroke you will have to go with a 450cc or better to keep up with a 250 2 stroke. Look up youtube vids of diff bikes your interested in and search for vids 250 2 stoke vs 450 4 stroke and 125 2 stroke vs 250 2 stroke and see what the differences are
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