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70 and 50 motor kits?

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hey guys well a motor kit for a 50 fit on a 70? I was supposed to get a kit for my 50, and got sick of wating, and then it came so now i have 2. So if it well work on my 70 that would be sweet. Thanks for any info

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Well yes and no. The cylinder and all will bolt right up, the only problem is if you ordered the kit for a 50, then that means it came with a flat top piston and if you now have the 70 head you need a domed piston. So unless you still have your old 50 head, you may be out of luck, that or you can just find a domed piston that is for the 70 head. If you have a 52mm cylinder, try contacting www.hondatrailbikes.com, they have a piston that works with 70 heads and will probably sale you one seperatly.

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Listen to Jetster - he knows his stuff. And definately talk to Mike at Trailbikes. Their prices/service/support can't be beat in my opinion.

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Well yes and no. The cylinder and all will bolt right up, the only problem is if you ordered the kit for a 50, then that means it came with a flat top piston and if you now have the 70 head you need a domed piston. So unless you still have your old 50 head, you may be out of luck, that or you can just find a domed piston that is for the 70 head. If you have a 52mm cylinder, try contacting www.hondatrailbikes.com, they have a piston that works with 70 heads and will probably sale you one seperatly.

Let me summarize for you. KX "what to get?" JETSTER "TB kit $395" and you lived happily ever after.

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I didnt say to buy a whole kit, all it looks like he needs is a piston, which TB will probably sale him seperatly for pretty cheap, and he will be good to go.

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I didnt say to buy a whole kit, all it looks like he needs is a piston, which TB will probably sale him seperatly for pretty cheap, and he will be good to go.

Come on! I can put words in your mouth if I wanna. 😢 Bsides, you know that every stock xr owner should get a TB kit. It's a rule...a LAW! If it was proposition 88, I'd vote for it! 😢

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