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Post Info TOPIC: Bore size on a 2000 TTR250


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Bore size on a 2000 TTR250
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So, my daughter's bike is starting to smoke a lot, figure it's time for new rings and piston, looking on Ebay, looks like they offer a few replacements, 73.75 bore, 73mm bore, 73.5 bore, 

Any idea what size I need, I don't want to pay the inflated Yamaha OEM brand if I don't have too.

Thanks



-- Edited by dlee on Friday 23rd of February 2024 11:41:58 AM

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73mm is nominal standard bore. You will have to check whether your bike has been rebored before ordering a piston, otherwise you could end up with the wrong piston. Steve has Wossner piston kits in the shop, along with all the gaskets you need.

totallyttrs.com/epages/699105d9-e4cc-4b32-b236-84e72cd67f84.sf/en_GB/

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