RS NYTRO 1000 ER gearing help!!

nytrojon13

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Newfoundland
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Snowmobile
2006 nitro ER 1000
Hey folks , I have a 2006 rs nytro 1000 , I am wanting to drop a tooth on the top gear. From my research I’ve gathered that the stock gearing is 21/40 with a 68 link chain. Is this correct ? If so. Putting a 20 tooth top gear will I need to change chains or is the stock 68 link chain going to work?

I’m new to the gearing side of things , I have a 1.5 inch track put on it and I just want to achieve a little more bottom end grunt off the start for ditch banging and aggressive trail riding!
Any help will be greatly appreciated!!
 
Follow this link. https://totallyamaha.com/ You have 21/40 with a 70 link chain. To go to 20/40, you'll need a 68 link chain. All of this information is found in the Tecnical Pages found on the Home website.
 
is the sled clutched or extended? those where already geared lower than the vector 121 sleds.
 


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