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2021 Polaris VR1 650
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Discussion Starter · #1 ·
If so, what areas did you see improvement?

Thanks in advance
 

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I believe North Star Performance has something going or is in the works of a kit.
 

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With this winter starting off so slow, I bet there isn't really anything for the 650 until next winter. I'm excited to see if anyone comes to market with a pipe that can run safe on the stock fuel map and of course whether or not if said pipe actually makes any power especially once the pipe is hot.
 

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VR1 850 129, VR1 650 129
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If anything a good set of adjustable weights won’t hurt. I’m still waiting for DTR to publish a full dyno report on the 650 fully out of breakin. Mine is turning 8250 in soft conditions probably more on hard conditions with 1200+ hard miles on original belt. I’m waiting to see where the 650 makes power fully broken in Before I spend any money, I believe the vast majority of owners are happy with the 650‘s performance I know I am.
 

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I have just north of 680 miles on mine now and most I have seen it turn is 8150 so far, but normally it's 8100. But yes I too am interested in a full dyno report and where this motor is happiest running.
 

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2021 Polaris VR1 650
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229 Posts
Discussion Starter · #7 ·
If anything a good set of adjustable weights won’t hurt. I’m still waiting for DTR to publish a full dyno report on the 650 fully out of breakin. Mine is turning 8250 in soft conditions probably more on hard conditions with 1200+ hard miles on original belt. I’m waiting to see where the 650 makes power fully broken in Before I spend any money, I believe the vast majority of owners are happy with the 650‘s performance I know I am.
Interesting, I have the same mileage and pull the same rpm.
 
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Starting to get concerns about only turning 8100 while you guys are seeing 8200+. Does yours go straight to 8200+ or does it go 8100, then creep up to higher RPMs?
 

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2021 Polaris VR1 650
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Discussion Starter · #11 ·
No creeping on mine. Does your belt need adjusting?
 

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I have tried tighter and looser and seems to make no difference.
 

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Watch the Joey's (from BMP) video on the dyno run of the 650. Believe peak power is 8100-8150.
 

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That's good to know. But mine is fully out of break in.
 

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You guys might want to report in on your driver and sled weight before worrying about a couple hundred rpms.Driver weight and storage bags or saddlebags full of gear will change the sleds performance 200 rpms easily.Thats the basic reason clutch kits dont work without adjustable weights to get it dialed in for every rider.Dont forget track and studding differences will also have an effect as well as your track adjustment itself.
 

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My set up
650 129. 1.35 cobra
700 miles, 87 octane ,
I go 210, Northern Michigan.
Stock accept 10-68 weights

From day one this sled would pull 8350 running 87 octane, never missed a beat, we have 3 650s all set up identical, adding 10-68s brought my rpms to 8150. And added 2-3 sleds links on average, also better mpg compared to the other 2 in the same conditions. This sled runs very well.
 

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peak h.p. torque is very close to the 850. 8000-8150 range. if your turning more then this you are not going to be faster. we made a big improvement to the stock set-up already. just want some deep snow testing before we put these out there. 92 mph on the gun to 103 so far same distant. and gained every where else. already blown 800's away. haven't lined up with our rocket 800. this week end will tell the story. first radar run.
 

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2021 650 Launch Edition 137" ; 2014 XF 7000 Cross Country Sno Pro 141"
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26 Posts
You guys might want to report in on your driver and sled weight before worrying about a couple hundred rpms.Driver weight and storage bags or saddlebags full of gear will change the sleds performance 200 rpms easily.Thats the basic reason clutch kits dont work without adjustable weights to get it dialed in for every rider.Dont forget track and studding differences will also have an effect as well as your track adjustment itself.
Spot on! At 260lbs without gear, I've always had to take some weight out of the primary to get to peak rpms in other sleds...200 rpms as simple minus a gram per weight. The adjustable weights are great for this.
 

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61 miles on the sled. 84 mph in 660' soft snow track. beat every 800 and tied a xrs 850 doo. our 800 assault went 86 our doo back country 850 fastest 850 there @ 85 talk of the run was for sure our 650. so yes our clutch kit was for sure better then stock. next is e.t instead of speed. going to be a lot of pissed off people we bet?
 
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