Driver back rest spring
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Seasoned HDF Member
Joined: Apr 2008
Posts: 23,399
Likes: 8,509
From: Spartan Country, Michigan
Driver back rest spring
Been doing some searching to find some answers, and have not found an answer. The driver back rest on my SG has a spring broke and missing. The pad flops in the breeze. It flops forward and has no spring (well very little) tension to keep it pulled up. Riding is fine, it fits up to my back nicely. But the flopping and missing spring have me a bit pissed. Anyone replaced this spring? If you have, can you give me an idea of what size, length, tension, etc I would need to replace? Or tips, hints, or suggestions???
Thanks for any input.
Thanks for any input.
Road Master
Joined: Apr 2018
Posts: 1,172
Likes: 709
From: Indianapolis
Just measured mine, except for tension. An observation, the arms go wider than the spring, so it isn't captive. You can buy the spring from HD (part 10406), but if I were you, I'd just swing by Lowe's or Home Depot, or even Fastenal. Take the seat with you. As long as it fits over the nubs and you can squeeze it to get it in and out, you should be good. I've been thinking about doing this myself and then taping or zip-tying it up high on one of the arms so I have a spare.
Free length = 2.25"
Compressed = .675"
ID = .375"
Free length = 2.25"
Compressed = .675"
ID = .375"
Last edited by Crabchuck; Apr 3, 2020 at 12:27 PM.
Thread Starter
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Seasoned HDF Member
Joined: Apr 2008
Posts: 23,399
Likes: 8,509
From: Spartan Country, Michigan
Thanks Chuck...but this is the spring up under the back rest cover....not the spring that holds the back rest in place at the fender. The one that is in there appears to be about 3/8" dia. and has hooks at both ends.
Road Master
Joined: Apr 2018
Posts: 1,172
Likes: 709
From: Indianapolis
Sorry, misunderstood. If mine is factory (got it on eBay used), this is the dumbest design ever. Hooks into the plate, then around and down to another cross member plate. Not sure how else to explain it. If that's it, just a double hook end spring.
Overall: 4"
Coil length: 2.25"
Diameter: ~.375"
Overall: 4"
Coil length: 2.25"
Diameter: ~.375"
Last edited by Crabchuck; Apr 3, 2020 at 02:39 PM.
Thread Starter
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Seasoned HDF Member
Joined: Apr 2008
Posts: 23,399
Likes: 8,509
From: Spartan Country, Michigan
Chuck..... how did you get this info??? I been searching for couple days and could not find it! Thanks for this.... I'll be doing some shopping when the warden unlocks the cell doors!
Thank you!!
Thank you!!
https://serviceinfo.harley-davidson....4?locale=en_US
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Thread Starter
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Seasoned HDF Member
Joined: Apr 2008
Posts: 23,399
Likes: 8,509
From: Spartan Country, Michigan
Yeah....that was one of the first places I checked... but nothing on what I need!!!! Tanks 
for coming back on this!!
Actually this is one of the first places I check.... the install instructions. Surprising how much information you can find in these open areas!
Thanks again!!
for coming back on this!! Actually this is one of the first places I check.... the install instructions. Surprising how much information you can find in these open areas!
Thanks again!!
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Road Master
Joined: Apr 2018
Posts: 1,172
Likes: 709
From: Indianapolis
I took mine apart and measured it.....