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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> Piston rings ??
Post Info TOPIC: Piston rings ??
Richie Blyth


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Piston rings ??
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Can anyone tell me what size piston and rings are in a TTR ??

 



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TTRfan


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The standard bore is 72.95mm - is that what you mean?

Four oversizes are available in 0.5mm stages.

You buy rings to suit the piston which means that, if you don't know the history of the engine, you need to get the head off to check the markks on the crown of the piston - or measure it wink

Brian



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Richie Blyth


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yeah done that , measured it, 73mm . markings on piston are BSB & SK1 anyone know what these marks mean?? 



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