Progressive Monotube Kit
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Ultimate HDF Member
Joined: Jun 2012
Posts: 8,218
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From: Reston, Va
Progressive Monotube Kit
I'm looking at replacing the springs in my '07 Custom. Progressive recommended their Monotube Kit (31-251), which apparently replaces the entire guts of the forks. Does anyone have any experience with this replacement?
Roni
Roni
Last edited by Roni; Mar 27, 2013 at 12:42 PM.
Road Master
Joined: Jun 2009
Posts: 933
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From: Indianapolis
Dang those things are expensive at $300+. Most people's problem with the front end come from not having enough preload on the fork springs. This makes it really easy to bottom out and clunk the front end even on small bumps. Adjusting front preload is far more involved than adjusting rear shock preload. You have to take the fork caps off and change out the spacer for longer ones until you get the correct amount of "sag" when seated on the bike. Sag is best set to around 1/4 of the total suspension travel. I know nothing about these kits because it appears they were just released for the Sportsters. Anything out of the box though would require preload experimenting to get the best performance.
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Ultimate HDF Member
Joined: Jun 2012
Posts: 8,218
Likes: 827
From: Reston, Va
I agree. Considering the lack of responses, I'm guessing that there are very few people who have this installed. At $340, I'm not so sure that I want to experiment with an unknown product.
Road Captain
Joined: Mar 2012
Posts: 533
Likes: 43
From: Fresno, TX
I have installed a set in my Goldwing. Great set up. Would I do it again. Yes. Is handling better? yes Well Worth the money.
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From: Bedford UK
Monotubes suffer IMHO from having progressive-rate springs, which I do not favour, whereas we can fit suitable single rate springs with the other two. I have Emulators in my Sporty and frankly don't see any benefit, so cannot recommend them.