Blue or Yellow primary spring ?

[Hjalti_GTO]

Got a 2013 m800 162" if you have to chose between yellow and blue prinary spring. Witch one whould you use ?

 

[Radical Rider]

Go with Polaris 120-340 primary spring

 

[Hjalti_GTO]

Why is that ? I got new yellow and blue springs. Whats bad about using eather ?

 

[Hjalti_GTO]

Anyone ?

 

[kiliki]

lot more to it than just blue or yellow.

 

[Frostbite]

The spring radical rider suggests is a great spring. i have several of them. So are the Speedwerx H5 alloy springs. I am hooked on them now. I can't remember the colors right now but i think there is a red/white 120/340 and a blue/white 120/310. Although on paper the 120/340 should work better. On both my M8 and M8000 I have gotten a bog right off clutch engagement. For that reason alone, I now use the 120/310 H5 primary springs.

 

[kiliki]

I to love the 120-310 but the OP will not give alt, mods, gearing ect.

 

[Vern]

I like the SLP black/silver 110/290 spring. Clutching is like oil preference, everyone has their own opinion

 

[Storskogen]

The spring radical rider suggests is a great spring. i have several of them. So are the Speedwerx H5 alloy springs. I am hooked on them now. I can't remember the colors right now but i think there is a red/white 120/340 and a blue/white 120/310. Although on paper the 120/340 should work better. On both my M8 and M8000 I have gotten a bog right off clutch engagement. For that reason alone, I now use the 120/310 H5 primary springs.

What is the engagement RPM when bog and not? I have a Speedwerx-kit but had to put a shim on in the clutch to be able to drive slower than 30km/h (under 30km/h it stopped moving forward [emoji37]) and I think it might be why I have a bog.

M800 -13, Speedwerx full exhaust, PCV. BC WT 660T -06

 

[kanedog]

Go with Polaris 120-340 primary spring

Bad advice. That spring is too much at the 340.

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[summ8rmk]

Bad advice. That spring is too much at the 340.

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That is the recommended spring with MDS weights.

[emoji12]

 

[kanedog]

That is the recommended spring with MDS weights.

[emoji12]

The 340 finish rate is quite stiff and it likes to break is what I have found.

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[summ8rmk]

How many miles when they break?

[emoji12]

 

[kanedog]

How many miles when they break?

[emoji12]

Anywhere from 50-400miles.

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[summ8rmk]

I have 1,500 on my first sled and 1,300 on my second.

[emoji12]

 

[kanedog]

They last longer on trail queens.

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[summ8rmk]

They last longer on trail queens.

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I am what I am. Flatlander....
And i get thousands of miles out of every snowmobile without rebuilding.

[emoji12]