Same fork legs and triple tree's for the last 20 years. I have progressive fork springs in my 07 bagger with 2 inch of preload and running 15 weight castrol fork oil. I'm very happy with the results as I don't drag the boards on most corners anymore and under hard braking I get fuck all fork dive compared to the stock springs. I can sit well above the posted limit on rough country roads with no po-go bounce so it was worth the 100 bucks and couple hours fitting them in my book. 6 years and still happy with the results. There's better front end mods if you have the bucks but for the price there hard to beat.

Hi I did the Progressive springs a while ago but also went for SE fork oil. Result was better but not sure whether it was due to one or both. That said Harley suspension equipment is not that top notch.... so I am pretty sure the new springs played a big part.