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i believe on the 06+ stock cylinders the cranks crack them, correct me if im wrong, but i remember something like that, or maybe it was the DASA cyl.

and some say it vibrates more and u have to get the crank and pisotn balanced at crankworks.
 

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Not balanced and No problems thus far (knock on wood). I like the torque my bike has now too, good setup
 

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only problem i have had with mine is the great power out put and the increased roost from all of the torque. I did have mine balanced and it feels so close to stock its crazy but it turns up quicker bc of the shorter rod
 

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If you have actual personal knowledge of an engine that failed as a direct result of the use of a HR HD or +3 crank,then buy all means post it up....but....please refrain from using blanket statements or using third party heresay regarding this subject.
I recently started a similar thread and there were quite a few responses and to my knowledge...there have not been any reports of durability issues of failures due to the HR cranks.
The only failures I am aware of are the ones that combined a big bore/stroker combo....and it was the cylinders that failed...not the crankshaft.That is not to suggest the cylinders are at fault...in some instances...builder error or other parts failure could be a factor.
 

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^^^^^^^^^^^^^^^
What he said.
I have not yet seen the crank as the issue.
I am still going strong on mine with the Athena 98mm jug. So far, so good.
But I don't have huge hours on it yet either.
I did not balance, but I wish I would have. It will just add longevity to the whole build.
 
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