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Project 550 seca question

Discussion in 'XJ Modifications' started by driverlarry, Jun 2, 2010.

  1. driverlarry

    driverlarry New Member

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    I recently acquired an 81 seca 550. I have it down to the frame and was wandering what swingarm I can use to get a wider tire on the rear. I can arrange getting a spacer made for the front sprocket if needed. I would like to have a 140 rear tire if possible. If the 140 isn't doable I will settle for anything wider than factory.
     
    driverlarry, Jun 2, 2010
    #1
  2. driverlarry

    driverlarry New Member

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    I know someone has done this before.
     
    driverlarry, Jun 5, 2010
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  3. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    Too wide throws off the handling; this is supposed to be a sportbike, remember?

    That being said, it's possible that the box-section Radian swingarm might allow a slightly wider rear. The Maxim has a 130 but it also has a 16" rim.

    I'm running a 4.00X18 on the rear of one of my 550 Secas and it's plenty wide; I'm going to go to a 120 from the stock 110 on the other bike soon.
     
    bigfitz52, Jun 5, 2010
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  4. Thrasher

    Thrasher Member

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    Like Bigfitz said the 130 tire is good for that size rim. I have put many a mile on the racetrack with that size and never had a problem. I have since put a Radian swinger on with minor mods needed, it is just a little longer.
     
    Thrasher, Jun 11, 2010
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