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2008 ultra fork rebuild kit question

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Old May 25, 2026 | 10:28 PM
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Default 2008 ultra fork rebuild kit question

Ok people. I have finally got my rear shocks figured out. I am on a bit of a budget. So, I went after the shock oil. Only drained out about 6 oz of oil from both shocks. They held vacuum and pressure good. So filled with 10oz of oil. Rode it 100 miles today and checked for leaks. No leaks. Wow, what a difference that made !!!!!!!!!! Completely happy with them now.

So now, I would like to go after the front forks.
A little background. 2008 ultra classic. I rarely ever ride 2 up anymore and am on a bit of a budget. I do not want to lower the front any. Just want a full rebuild kit.

So, what suspension kit/manufacturer do you recommend? I have been looking at Progressive. But wanted to get some input from people that has messed with this stuff.

Thank you
 
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Old May 26, 2026 | 07:53 AM
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No mention of how many miles on it. Yer on a budget change the fork oil with fresh 15w oil. Worked on the rear shocks, with big improvement.
 
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Old May 26, 2026 | 08:35 AM
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1tx - I have 53,000 miles on the bike.
I was thinking of just doing the oil and seeing how that goes. Cheap and easy. I do agree with that.

Thanks
 
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Old May 26, 2026 | 09:58 AM
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Agree - No need for a "rebuild" if the seals are not leaking. A flash and oil change did wonders on my FatBoy.
 
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Old May 26, 2026 | 10:07 AM
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My plan is to 10 weight this summer to see if want 15. Some people mix 10 and 15. Then do progressive springs over winter. About $130 for springs. Mine is 2007. So at that age I'll probably do seals up because it is so old. As your 2008 is.
 
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Old May 26, 2026 | 04:39 PM
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If the seals are not leaking. I would leave them alone. I have several bikes that are from 24 to 20 years old and still have the original seals. They will let you know when it's time to change them. Short of a catastrophic damage to the fork tube causing massive leakage, a fork seal will just start to seep and give you plenty of warning that it's time for replacement. Just my 2 nickels of advice.

Yes, mixing 10 & 15 will give you 12.5 wt. Just make sure you stick to the same brand so there is no incompatibility. Or, just for the hell of it - Try ATF+4. Works the treat on my bikes.
 
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Old May 26, 2026 | 05:05 PM
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Just putting fresh fluids in the forks will make a difference. I would go with Screaming Eagle heavy fork oil or 10-12 weight maxima is easy to find at metric shops.
 
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Old May 26, 2026 | 05:41 PM
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I think the oil change is going to be the start. See how it goes.
Not knowing how much and what was put in it, if ever. I will start from fresh with new oil.

Thanks every one.
 
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Originally Posted by sjones73
I think the oil change is going to be the start. See how it goes.
Not knowing how much and what was put in it, if ever. I will start from fresh with new oil.

Thanks every one.
Good place to start
 
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Old May 26, 2026 | 08:45 PM
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I've neve changed for seals. But if forks are off bike, how much work is it?

I just bought some used chrome forks. Harley should do this at factory
 
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