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For my ever ongoing rebuild of my GS850G, I'm looking to get the front fork sorted with progressive springs. However, I don't know the OEM spring specs. I'm getting a good deal on Progressive Suspension PS1145 but not sure if it will work for the '79 GS850G forks. Can anyone help?
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Looking at an application list, I'm pretty sure those Progressive springs (if you have a set of 11-1145 springs) are intended for much larger forks with a 41mm outside diameter (for example, they fit most years of the SV650). Your bike's forks have a 37mm OD, so they'll need much skinnier springs to fit inside.
After some assorted poking around in dark corners, I turned up this Progressive part number for Progressive fork springs for all years of the the 850G/GL. 1000G/GL, and 1100G/GL: 11-1129
It appears to be in stock here:
If you are large and/or ride fast (guilty on both counts), you'll want straight-rate springs. Race Tech and some other suppliers have these. The Progressive brand springs are a good all-around choice for the more average-ish rider.1983 GS850G, Cosmos Blue.
2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
2015 Yamaha FJ-09, Magma Red Power Corrupts...
Eat more venison.
Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.
Celeriter equita, converteque saepe.
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Thanks bwringer. Fortunately, I'm not guilty on both counts
So I guess I shouldn't get too excited about the great deal that turned up for the what would be useless set of springs.
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I think I might have a set of progressives I bought off someone here & never used... They would be for a 1000 or 1100 so will be the same for an 850G I would think. I can take a look on the shelf if you're interested. PM me an email or cell phone number & I can send pics. 
1980 GS1000G - Sold
1978 GS1000E - Finished!
1980 GS550E - Fixed & given to a friend
1983 GS750ES Special - Sold
2009 KLR 650 - Sold - gone to TX!
1982 GS1100G - Rebuilt and finished. - Sold
2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!
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TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/Comment
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That sounds like a great deal, Dan! There's no telling what's hiding in garages all over GS-land...Originally posted by salty_monk View PostI think I might have a set of progressives I bought off someone here & never used... They would be for a 1000 or 1100 so will be the same for an 850G I would think. I can take a look on the shelf if you're interested. PM me an email or cell phone number & I can send pics. 1983 GS850G, Cosmos Blue.
2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
2015 Yamaha FJ-09, Magma Red Power Corrupts...
Eat more venison.
Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.
Celeriter equita, converteque saepe.
SUPPORT THIS SITE! DONATE TODAY!
Co-host of "The Riding Obsession" sport-touring motorcycling podcast at tro.bike!Comment
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