Adjusting Shocks
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Seasoned HDF Member
Joined: Oct 2012
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From: St.Louis Mo.
Adjusting Shocks
I was trying to find the posts that talk about setting the proper sag for a tri glide. I think this was a starting point for the shocks And then from there i believe you can fool with the air pressure some. Can't find it anywhere. Can some one point me in the right direction ?
Road Master
Joined: Feb 2014
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From: Oak Harbor, OH
It depends on the year, as several versions have been offered. It sounds like an earlier stock setup. And if some aftermarket parts have been installed like different shocks and the shock mounting brackets/lift kits things will have changed.
You can take a look at basically your whole shock assembly by running the back end up on a couple of 4x4s (chock the wheels of course.) Look up from under the front inner fenders, once you look past where the axle assembly attaches to the rear fork you can see almost from the lower shock mount to the upper mount. You can see the lower shock mounts from behind in between the exhaust pipes
If the shocks have a mechanism to set sag/preload it may be obvious, like a ring on top of the spring that can be rotated. For your air assisted shocks, you'll see the connections. (Bleed all the air before setting anything.) In addition, several aftermarket shocks offer a 'rate adjustment'; basically a small screw mechanism on the side of the shock near the bottom, with detents for various settings.
Edit: the stock rear end on my '14 didn't have any adjustments on the shocks themselves other than air pressure. And for what it's worth, the word "sag" doesn't appear anywhere in the service manual trike supplement.
You can take a look at basically your whole shock assembly by running the back end up on a couple of 4x4s (chock the wheels of course.) Look up from under the front inner fenders, once you look past where the axle assembly attaches to the rear fork you can see almost from the lower shock mount to the upper mount. You can see the lower shock mounts from behind in between the exhaust pipes
If the shocks have a mechanism to set sag/preload it may be obvious, like a ring on top of the spring that can be rotated. For your air assisted shocks, you'll see the connections. (Bleed all the air before setting anything.) In addition, several aftermarket shocks offer a 'rate adjustment'; basically a small screw mechanism on the side of the shock near the bottom, with detents for various settings.
Edit: the stock rear end on my '14 didn't have any adjustments on the shocks themselves other than air pressure. And for what it's worth, the word "sag" doesn't appear anywhere in the service manual trike supplement.
Last edited by Oogie Wa Wa; Jul 10, 2021 at 02:06 PM. Reason: engrish, mo info
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Seasoned HDF Member
Joined: Oct 2012
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From: St.Louis Mo.
I have a 15 tri .with the air shocks I think the post was by Kevin of DK Customs and he was talking about the sag when a rider gets on the bike. Can't remember just what measurements he was talking about. Maybe he was not talking about the air shocks.
Stellar HDF Member
Joined: Apr 2016
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From: Masshole
Air shocks don't have any sag setting. Set the PSI based upon the rider and passenger weight. There is a good chart in your owners manual. If you don't have that then you can get it free on Harley's website. https://serviceinfo.harley-davidson....cle/lookupForm
Last edited by chopper_man; Jul 11, 2021 at 04:24 PM.
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