
Upstater57
Expert
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- Snowmobile
- 2022 Tcat EPS, 2014 ZR9000 1978,1979,1980 SRX
I think the spring difference (heavier) works better for heavy riders. (guys over 250lbs)I tried that stiffer center shock spring and found it really changed my ride quality. I went back the original one.

Upstater57
Expert
- Joined
- Apr 25, 2021
- Messages
- 408
- Age
- 65
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- New York
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- USA
- Snowmobile
- 2022 Tcat EPS, 2014 ZR9000 1978,1979,1980 SRX
In 1000ft or so (with equal traction) the 24/50 is a good choice for my bone stock 2022 Tcat. I like 21/38 on my 2014 ZR9 with a 300hp tune. Not sure what I will run when I boost the Tcat.The SRX (21/41) is about 6-7 MPH faster than the T-Cat (24/50) on paper which is likely the real world as all other factors are equal.
Taking gears only into account.
View attachment 168846
Gear Ratio Calc Top Bottom Calculated Ratio SRX Stock 21 41 0.51 1.95238095TCAT 24 50 0.48 2.08333333Choice 1 22 41 0.54 1.86363636Find other gear ratios 25 46 0.54 1.84
Top Speed Calc SRX Stock 123.46TCAT 115.70Choice 1 129.3422/41
WinderFab
TY 4 Stroke God
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- Mar 1, 2009
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- 2020 Sidewinder Ltx GT
X2.. I’m 210 without gear and original spring is way more plush over the bumps.I tried that stiffer center shock spring and found it really changed my ride quality. I went back the original one.

hellflyer
VIP Member
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- Dec 2, 2008
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- 1,086
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- Georgtown ONT. Canada
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- 2020 sidewinder ltx se
Yup! I'm 275lbs and I tried the heavier spring and found it made the ride worse. I Actually valved the front shock softer on the hi-speed side and the ride became less choppy !

jtmetal
TY 4 Stroke God
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- '17 Sidewinder LTX SE
2017 stock Winder,185lb rider, cat center spring, no transfer blocks/rod. Couldn't possibly be any happier. Lol.
Odd man out.
I'm considered a "fair weather" rider. I don't go anywhere until I see picks.
Odd man out.
I'm considered a "fair weather" rider. I don't go anywhere until I see picks.
stgdz
TY 4 Stroke Junkie
Maybe it's because the front track shock is absolutely abysmal without a clicker.


1nc 2000
Lifetime Member Tim
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- Marquette, MI
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- Yamaha FX Nytro RTX SE
I run the cat 160/260 center spring with just a couple turns of preload and like it a lot.2017 stock Winder,185lb rider, cat center spring, no transfer blocks/rod. Couldn't possibly be any happier. Lol.
Odd man out.
I'm considered a "fair weather" rider. I don't go anywhere until I see picks.
One turn on that spring can find the sweet spot for a persons weight and riding style.

jtmetal
TY 4 Stroke God
- Joined
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- '17 Sidewinder LTX SE
Who do you think I got the 160/260 center spring idea from?!?! HahaI run the cat 160/260 center spring with just a couple turns of preload and like it a lot.
One turn on that spring can find the sweet spot for a persons weight and riding style.
Couldn't be happier! Thanks.....
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