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Low Altitude Clutching

In Maine, we ride 1-4000 feet, but mostly between 1500 and 3500. According to the owners manual 66 or 68 would be ok. I am also 220lbs and assume this chart is for people who wiegh 180lbs. I am thinking 66 may be perfect for me.
 
Pros are very sensitive to the riders weight. Just keep that in mind when you are clutching your sled. IMO I prefer a heavy spring with an adjustable weight to tailor your needs for the best setup. I would definitely try and clutch for ~8100-8300 peak rpm for those deep days. One easy way to keep your sled from bouncing off the rev limiter on the trail or hard pack if your are clutched for deep snow is to simply put your sled in ethanol fuel mode(if you burn 90 non eth fuel) and it will detune your sled slightly keeping it from over-revving. And then when you get to the deep stuff, switch it over to 90 non-eth fuel mode. Works great for me.
 
Ride it first IMO. I've never had a sled clutched good from the factory until my12 pro. Not even sure what's in it but guarantee it's the oe clutching at low WA and OR altitudes and it's perfect.
Maybe more to gain with some other kits but I don't see it. It up shifts right loads the engine well. Maintains rpms in all conditions and backshifts good too.
 
sleds

polaris tells us to run 10-68s in sd and thats low elevation. mountain weights at low elevation have run into some runability issues for us

Just passing on
 
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