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13" or13.5"

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Old 12-09-2018, 10:54 PM
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Default 13" or13.5"

My plan is get longer shocks on the rear of my XL1200L. Current ones are 12" and the plan is sither 13 or 13.5" 412 progressives. If I go 13.5" will I likely run into the high speed wobble issues I read about?
 
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Old 12-09-2018, 11:17 PM
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I would run the 13.5, I know alot of people who went that route and none of them had issues.
you could always lower it back down with a lowering kit.
I have one that I bought incase I needed it, but never needed it. Its yours if you need it.
 
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Old 12-10-2018, 01:43 AM
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Thanks but doubt I will. The 12" make it easy to get old legs over, butt I don't think another 1.5" will change that much, but am hoing the extra travel will improve the ride.
 
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Old 12-10-2018, 06:25 AM
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Not sure about the wobble you mention w/ 13.5

For comfort, FWIW I would do the 13.5 over the 13.

The 13.5 would decrease rack/ trail under braking and perhaps load the front tire more.
Acceleration, I don't really see an issue in regards to wobbles with longer rear shocks as they would compress.

IMO most wobbles occur from front end issues, noting swing arm stability is usually good and frame head and tree bearing are good..
Wobble while corning? Could be rear shock dampening or good old frame or fork tube flex?

So maybe increase the fork spring rate, make sure tires are good add a fork brace?

Other co-members may have better/ direct experience with your question.

Good luck with your decision.
 
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Old 12-10-2018, 06:52 AM
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Originally Posted by handirifle
My plan is get longer shocks on the rear of my XL1200L. Current ones are 12" and the plan is sither 13 or 13.5" 412 progressives. If I go 13.5" will I likely run into the high speed wobble issues I read about?
Before spending your hard earned green on those shocks, take a read of this report on rear shocks, you may find it interesting. LINK

A good pair of 13" will be more stable, and will give more (and better) travel than the 13.5" 412's. See chart below (412's did not even make it onto the chart, but the better 444 & 490's did, and still just mediocre)-

 
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Old 12-10-2018, 09:36 AM
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I've got 13.5" shocks standard on my Sportster. Never a problem. Beats those 2" travel shocks they put on today.

John
 
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Old 12-10-2018, 10:29 AM
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I understand there are better shocks out there, seemsthere always is. My issues are travel and cost. If I decided to put some of those on, it might not ever happen. It's hard, on fixed income, to justify that kind of cash outlay fora bike that gets ridden just a couple times a week. I am not one to go hard in the corners and not sure I would notice the difference in rebound adjustments, to be truthful. I just don't like hitting a pressure ridge in the road and sending it up my backside because the shocks bottomed out.

Not lookiing to make this a canyon carver, just a bit more comfortable to ride.

I do appreciate the informed responses, as they help me understand when I am or am not getting top of the line stuff.

 
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Old 12-10-2018, 01:42 PM
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Originally Posted by handirifle
I understand there are better shocks out there, seemsthere always is. My issues are travel and cost. If I decided to put some of those on, it might not ever happen. It's hard, on fixed income, to justify that kind of cash outlay fora bike that gets ridden just a couple times a week. I am not one to go hard in the corners and not sure I would notice the difference in rebound adjustments, to be truthful. I just don't like hitting a pressure ridge in the road and sending it up my backside because the shocks bottomed out.

Not lookiing to make this a canyon carver, just a bit more comfortable to ride.

I do appreciate the informed responses, as they help me understand when I am or am not getting top of the line stuff.

I understand completely. For budget, you will do much better with a $100 take off air shock from a Touring Model than the 412's. You will get more travel, and a better quality ride.
 
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Old 12-10-2018, 01:57 PM
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Ok never saw that one coming. How does one measure the travel available in the air shocks? Is it dependant on how air is in them or does that just regulate the weight put upon them? Are there different lengths of those as well?
 
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Old 12-10-2018, 01:59 PM
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Also will any of the air shocks work on mine or are there certain years to look for? Mine is a 2007.
 


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