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Everything Dirt Bike
Make / Model Specific
Suzuki
RM vs. YZ
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<blockquote data-quote="Nighthawk016" data-source="post: 9357" data-attributes="member: 334"><p>So I was looking through the wiseco pro-lite pistons on RMATV... and i noticed... the 2010 YZ 250 Has a 66.4mm piston, and I thought to myself, this is a little bit of an odd size. Yamaha: Bore x Stroke 66.4 x 72.0mm</p><p></p><p>I jumped back to the 88 YZ which had a almost square bore 68mm. <img src="https://www.dirtbikeaddicts.com/static/images/smilies/thinking.gif" class="smilie" loading="lazy" alt=":thinking:" title="Thinking :thinking:" data-shortname=":thinking:" /></p><p></p><p>I then jumped over to my bike a 1996 RM250. Guess what I see? Its piston is ALSO 66.4mm. Suzuki: Bore x Stroke 66.4 x 72.0mm <img src="https://www.dirtbikeaddicts.com/static/images/smilies/devil.gif" class="smilie" loading="lazy" alt=":devil:" title="Devil :devil:" data-shortname=":devil:" /> </p><p></p><p>So that means Yamaha changed their engines and they now have the same bore and stroke (66.4x72mm) as a 96-08 RM250's. Now thats comical <img src="https://www.dirtbikeaddicts.com/static/images/smilies/smirk.gif" class="smilie" loading="lazy" alt=":smirk:" title="Smirk :smirk:" data-shortname=":smirk:" /></p></blockquote><p></p>
[QUOTE="Nighthawk016, post: 9357, member: 334"] So I was looking through the wiseco pro-lite pistons on RMATV... and i noticed... the 2010 YZ 250 Has a 66.4mm piston, and I thought to myself, this is a little bit of an odd size. Yamaha: Bore x Stroke 66.4 x 72.0mm I jumped back to the 88 YZ which had a almost square bore 68mm. :thinking: I then jumped over to my bike a 1996 RM250. Guess what I see? Its piston is ALSO 66.4mm. Suzuki: Bore x Stroke 66.4 x 72.0mm :devil: So that means Yamaha changed their engines and they now have the same bore and stroke (66.4x72mm) as a 96-08 RM250's. Now thats comical :smirk: [/QUOTE]
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Everything Dirt Bike
Make / Model Specific
Suzuki
RM vs. YZ
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