Torsion Springs - HCS Snowmobile Forums

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Old 08-11-2019, 07:24 PM   #1 (permalink)
NDN
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Default Torsion Springs

Getting ready to upgrade my torsion springs & have my rear shocks rebuilt to help with all the bottoming out from last year. When I have went to a few different web sites of dealers I'd order from, I see at least 4 choices & no description of what they are other then the original STD (standard) which is what I have now. ANYONE..... know the differences in the part numbers? Thanks.
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Old 08-11-2019, 11:53 PM   #2 (permalink)
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I looked at the springs for the 800 instead of the 850, but under "usage", it shows they fit the 850, and it lists the springs... the diameters are shown, and the strength is designed in accordingly. Not sure if this helps you.



7045208-329spring, tor,.375s,80,13#, rh, hd, blk [opt]


7045207-329spring, tor,.375s,80,13#, lh, hd, blk [opt]


7045190-329spring-tor,.359s,80,11#, lh blk [std]


7045210-329spring, tor,.375s,70,13#, rh, extra hd, blk [opt]


7043859-329spring-tor,.347s,80,10#, lh blk [opt]


7043860-329spring-tor,.347s,80,10#, rh blk [opt]


7043241-067spring-tor,.347s,77,9#, lh blk [opt]


7043240-067spring-tor,.347s,77,9# ,rh blk [opt]


7045191-329spring-tor,.359s,80,11#, rh blk [std]


7045209-329spring, tor,.375s,70,13#, lh,extra hd, blk [opt]
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Old 08-12-2019, 11:53 AM   #3 (permalink)
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Yeah skid is the same for all XC models.
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Old 08-12-2019, 11:47 PM   #4 (permalink)
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The larger "diameter" if you will (Yes, I know the springs are square) is going to be a higher spring rate. There are 2 versions of the heavier springs. One basically matches up with the orignal spring, just a larger "diameter". The "Extra HD" is the same "diameter" as the HD, but I believe has extra preload built into it by a different number of degrees of wrap on the tail of the springs. I switched to the "HD" springs in mine, minimum preload, and expect it will be just about right when the springs settle in a bit. As it is now, my "sit in" is only about an inch, but only about 100 miles on the springs.
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Old 08-13-2019, 09:43 PM   #5 (permalink)
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16-17 Mileage: 1800
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Been away for a few days. Thank you guys. I'm weighing in at approx 230lbs with gear. Thinking middle road springs & then getting shocks rebuilt with heavier oil? Thoughts?
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Old 08-13-2019, 11:50 PM   #6 (permalink)
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Quote:
Originally Posted by NDN View Post
Been away for a few days. Thank you guys. I'm weighing in at approx 230lbs with gear. Thinking middle road springs & then getting shocks rebuilt with heavier oil? Thoughts?

Have you had your shocks revalved first. I had huge complaints with mine bottoming and I had the shocks revalved to my weight and ride style and I could not be happier now. I'm 220 to 225 with gear and I ride aggressive.
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Old 08-14-2019, 12:10 AM   #7 (permalink)
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I go about 220 in gear. My issue wasn't bottoming, but excessive weight transfer. Try to squeeze in some throttle in a corner and the skis would unload and wash out. Coupler blocks were already maxed out, it was my only other option other than pulling in the limiter strap. I didn't want to go there...
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Old 08-20-2019, 10:45 AM   #8 (permalink)
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I installed the HD's that are on the top of the list above, and love them. Cured all the too soft & bottoming out issues and still rides nice.
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Old 08-25-2019, 08:17 AM   #9 (permalink)
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Current Sled(s): 2019 XC 850 Indy & CAT 2016 800 HC
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19-20 Mileage:
18-19 Mileage: 1500
17-18 Mileage: 1200
16-17 Mileage: 1800
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Quote:
Originally Posted by sleeper67 View Post
I installed the HD's that are on the top of the list above, and love them. Cured all the too soft & bottoming out issues and still rides nice.
These are the same springs my dealer is recommending for my problem. I'm goin' for it, hope they help.
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Old 09-11-2019, 04:52 PM   #10 (permalink)
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Quote:
Originally Posted by D-rail View Post
I looked at the springs for the 800 instead of the 850, but under "usage", it shows they fit the 850, and it lists the springs... the diameters are shown, and the strength is designed in accordingly. Not sure if this helps you.



7045208-329spring, tor,.375s,80,13#, rh, hd, blk [opt]


7045207-329spring, tor,.375s,80,13#, lh, hd, blk [opt]


7045190-329spring-tor,.359s,80,11#, lh blk [std]


7045210-329spring, tor,.375s,70,13#, rh, extra hd, blk [opt]


7043859-329spring-tor,.347s,80,10#, lh blk [opt]


7043860-329spring-tor,.347s,80,10#, rh blk [opt]


7043241-067spring-tor,.347s,77,9#, lh blk [opt]


7043240-067spring-tor,.347s,77,9# ,rh blk [opt]


7045191-329spring-tor,.359s,80,11#, rh blk [std]


7045209-329spring, tor,.375s,70,13#, lh,extra hd, blk [opt]
Quote:
Originally Posted by ry3an7 View Post
Yeah skid is the same for all XC models.
SO do these part numbers fit the 2020 Indy XC 137 850?

Nothing listed out there for the 2020 and I just spoke to my dealer and they say the same, but are looking in to it.
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