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DT125R Forum -> Tuning -> piston size
Post Info TOPIC: piston size
richie


DTR Respected Member

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piston size
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found out today that my bike has been rebored twice before because its plus 1 does anybody know what cc it is now roughly >confuse



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CooS


DTR Senior Member

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Not sure mate but stock bore size is 56.00mm so do a little research mate.

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CooS


DTR Senior Member

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This may help you out mate: http://www.blasterforum.com/do-yourself-20/how-measure-your-cylinder-bore-pics-15642/

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Dingle001


DTR Senior Member

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The plus 1 I think is plus 1mm which is 57mm.  I've done a table of cylinder sizes for different rebores. I think I've worked it out right, problem is it looks like the bike is illegal once you rebore it!! Any maths wizards out there? All I did was worked out surface area of bore multiplied by stroke. 

 

       

bore mm

56

56.5

57

58

stroke mm

50.7

50.7

50.7

50.7

displacement cc

124.9

127.1

129.4

134.0



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tripr


Guru

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dont sweat it m8 your barrel states 124cc they ain goin to take your top end apart to check if you have an extra pony hidin in there somewhere



-- Edited by tripr on Saturday 8th of October 2011 10:17:41 AM

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