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It's different from bike to bike my 07 with 63k on it nope but my wife's 08 with 24K on her UC had to add often so I took to the local HD shop they fond a bad valve seal and cylinder #1 piston rings were lined up was the cause of it. So I paid for the parts upgrade and now it has 103" with SE 255 and ACR cost me 2 hrs of labor and parts rest was thanks to ESP had to pay only$50.00.
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