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Thread: 2003 fat boy upgrades

  1. #1
    Junior Member Just broke my cherry!
    Join Date
    Feb 2009
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    South Dakota
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    2003 fat boy upgrades

    New member here. Just purchased a 2003 fat boy with the fuel injected motor. It has a stage 1 kit and Rinehart 2 into 1 pipe. What else can be done to bump up the performance of this engine? It also has a 200mm rear tire, which is due for replacement. Which tire do you reccomend?

  2. #2
    Senior Member Senior Member wreckerman's Avatar
    Join Date
    Aug 2004
    Location
    cleveland TN
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    16,696

    Re: 2003 fat boy upgrades

    welcome , as for tire Avon is the hot ticket item, around here good grip ! as for your bike next item would be a cam , after that look into some head work Big Boyz add to the left do a great stand up job with good prices for us
    Bucket list are for Sissie, men do it while they can enjoy it

  3. #3
    Junior Member Just broke my cherry!
    Join Date
    Feb 2009
    Location
    South Dakota
    Posts
    4

    Re: 2003 fat boy upgrades

    I have been reading about their head work and definately like what I hear. Can I have the heads ported now, then down the road add a 95ci big bore kit without reworking the heads again? Also, this is the fuel injected model. Can anyone reccomend a good Harley shop in the Milwaukee area to tune it for me?

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