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Discussion Starter · #1 ·
Any speculation why the 129" xrs got the smaller top gear vs the x

Should be entertaining to see which one will be faster. Should make the need for heavy studding a complete must
Put a 26T in a tnt last yr with all positive results.
 

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I'll tell ya my 18 MXZ-XRS 850cc is No light weight ! It weighs a Ton ! I think the rear end of the sled is heavier than my 17 Summit 154 X 850 !
 

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That's interesting. I put a 25 in my '17, but moved to a 26. Stock was 27. The 25 pulled fine, but rn out on top. 26 pulled every bit as well as the 25, but had more up top. 26 seems to use the clutch better.

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Beautiful ! Cause I have the 1.25" track and really didn't feel like buying a new gear and ripping my chain case apart If I don't have to !!
 

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Discussion Starter · #11 ·
25 in mine, had a 1.25" ripsaw.
You can pull the vent/oil fill plug at the top sprocket. Your can see what you got at that point. Easy to see/check.

Looks like the 25 is good for 112mph
27 was 121
I did buy a 26 toof, but going to try the 25 first. Get that primary into OD should be easy..lol
 

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You guys complaining about getting a 25t and wanting a 27. Stuck me with a 23T with the Ice Cobra, but boy will it pull. :smile_old:
 

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If I check my xrs 129" Ice Ripper and find a 25 I'm getting on the ph to doo right away. Part of the reason belts blow is pulling them to high in the secondary. These 850s will be gearing limited stock, which is not good.
 

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1.6" ic 129s get the 25t ,1/4" get the 27t gades get 25t with a 1 1/4" and the gade 1.6 ic gets a 23t .BRP doesn't use a 26t because they don't like the dog leg in the chain .The 2016 xrs came with a 25t gear with the 1 1/4" track ,but most geared up .If your one of those that like to over stud you''ll find gearing up and spinning all that weight will kill your top end . :wink_old:
 

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Discussion Starter · #20 ·
1.6" ic 129s get the 25t ,1/4" get the 27t gades get 25t with a 1 1/4" and the gade 1.6 ic gets a 23t .BRP doesn't use a 26t because they don't like the dog leg in the chain .The 2016 xrs came with a 25t gear with the 1 1/4" track ,but most geared up .If your one of those that like to over stud you''ll find gearing up and spinning all that weight will kill your top end . :wink_old:
1 1/4" standard ripsaw. Was really surprised to see the 25, that was suppose to be for the tall tracks.
That's why I posted it.
 
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