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Thread: Irs question

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  1. 10-30-2020, 12:41 PM #1
    edwardb
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    The only difference is the stud threads. The front spindles have SAE 1/2-20 threads. The newer 2015+ IRS hubs are metric. Factory Five includes new SAE studs to swap them out. Discussed frequently on the forum, but not hard IMO. If you buy wheels from Factory Five, they will come with all SAE lug nuts.
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  2. 11-03-2020, 10:09 PM #2
    alexmak
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    Quote Originally Posted by edwardb View Post
    The only difference is the stud threads. The front spindles have SAE 1/2-20 threads. The newer 2015+ IRS hubs are metric. Factory Five includes new SAE studs to swap them out. Discussed frequently on the forum, but not hard IMO. If you buy wheels from Factory Five, they will come with all SAE lug nuts.
    Physically swapping the studs was probably the hardest thing we had to do, and we gave up in between and asked friends from a nearby garage to help out
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    FFR mk4 roadster complete kit, 347 cu in carbed BluePrint engine, TKO600, IRS, power steering, ordered Jan2020, delivered 3/25/20, titled 8/23/20, finished 07/17/2021, graduated 10/06/2021
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