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My son has sold his '07 crf70 and is looking at getting a bigger bike. He has come to me with 3 bikes that he has seen and liked, one being a 2006 crf150f and the others being a 04 suzuki rm85 and a 03 cr85r. He needs a bigger bike because of his height, he is 5' 4" and 13 years old. My question is aside from the obvious 2-stroke/4-stroke, what is the difference in speed. and handling with these bikes. I prefer the honda as I have always had them but the other 2 bikes are good prices I just haven't been on a 2-stroke in years and do not kow much to compare them. Thanks

If he rides track, the RM or the CR would be better bikes. The CRF 150F is a great trail bike, but much heavier, slower and has inferior suspension when compared to the other two.

I have researched as best I could, it shows the crf being32.5 seat height the rm at 33.5 and the cr at 32.8 so size wise they are the same pretty much. He does ride mostly at a track that we go to. He is not real hardcore yet but he does enjoy going. Will the 2-stroke be hard to get used to compared to a 4-stroke. He has to learn how to use a clutch now but will it be any harder on a 2 stroke? Thanks

A clutch is a clutch. He will use it a lot more on a two stroke than a four stroke.

The two strokes will be much better on the track and he will become a better rider, much faster. Two strokes require more technique and skill due to the way the engine makes power.

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