New to me 08 XP, gearing is 20/49? Seems really deep?

[snowmanx]

My understanding is stock is 21/45 on 09s and up? Was the 08 geared differently? Sled seems to hit a wall at 60mph. 20/49 seems way deep to me if stock is 21/45,

I sled about 5000-7500feet, 154 stock track, want a good all around sled, climbing, boondocking, get her up to 75 anyways on the trail.

Am I missing something here. Guy I bought it off states 21/49 was stock geaing, but I am not finding it...

Where should I go with this? Back to bottom 45?

 

[sledr4life]

20/45 is stock gearing on a 154.

based on the info provided and the math, you might gain back 10 mph on your top end going back to stock. one tooth on the top is around 5 mph and one tooth on the bottom is usually around 2-3 mph.

I would also check your clutch set up as one of my friends has an 08 154 and can get 80-90 on the dream dial on hard pack.

it may take more than gearing to get you there.

 

[byeatts]

My understanding is stock is 21/45 on 09s and up? Was the 08 geared differently? Sled seems to hit a wall at 60mph. 20/49 seems way deep to me if stock is 21/45,

I sled about 5000-7500feet, 154 stock track, want a good all around sled, climbing, boondocking, get her up to 75 anyways on the trail.

Am I missing something here. Guy I bought it off states 21/49 was stock geaing, but I am not finding it...

Where should I go with this? Back to bottom 45?

2.45 ratio is good on the Mt. Not for running trails in Minn.

 

[treeboy]

I'm pretty sure The 08 154 came first out as a 19/45 than brp was changing the top gear to a 20t cause of the belt issues. I was running 20/51 before I went belt drive, but it is a full mt sled not a trail racer.

 

[snowmanx]

I'm pretty sure The 08 154 came first out as a 19/45 than brp was changing the top gear to a 20t cause of the belt issues. I was running 20/51 before I went belt drive, but it is a full mt sled not a trail racer.

More research reveals that the 08s came out with 21/49 gears, and a few in 2009 apparently.

Don't get me wrong, I DON'T WANT A TRAIL BLAZER! lol. I have had my fair share of well performing mountain sleds, and ALL of them, including the 96 powder special, would do 75mph+.

None have ever been geared so deep that 65 was top speed, and the 09 up are now 21/45 stock, which seems to work quite well. So I am just wondering(I guess I need to give the gearing a fair chance, I've only ridden it on the trail! :face-icon-small-con. Why so deep, will it really be that much better in the trees that it is worth sacrificing other areas of the sleds performance like hill climbing, or trail? (like I think it will, but I could be wrong).

 

[winter brew]

Is your sled a 154 or 163? 163's came 21/49 and we almost always geared them to a 20. They will still do upper 70's-low 80's with the TRA overdrive.
Keep in mind the new Doo's are coming geared at 19/51 and will top out in the mid 70's mph.
If its a 154, I would recommend 19/45 for off trail riding. Lower altitudes you might go up a tooth or basically back to stock gearing.

 

[SkidooSteve12]

My 2014 XP Summit Sport 800R 154 came stock with 19/49 gearing. I had a 21t gear so I just installed that right away, since I'm riding low altitude in Michigan. My 2009 Summit 800R 154 had the stock 21/45 gearing and I thought that was just fine. I don't really notice much of a difference between the 2014 and 2009, but I haven't tried a top speed run with the 2014.

 

[FEZ]

You are probably hitting a wall due to the clutching, not the gearing.

Figure out what is in it, then call SHR @ 612.718.3861

 

[Maximum1]

Agree with it being a clutch issue. My 09 163 had 21/49 gears and it would show 91-93 on the speedo lake running.

 

[BIG JOHN]

OK, time for some real facts...

stock was 21/45
update was 19/45 (too low IMHO but perfect for 2.5 track)

SHR did 20/45 for stock 2.25 track

clutching...I would say this is your main culprit...be it simple maintenance or tuning for your elevation...

call for details...BJ

 

[treeboy]

John is right, I forgot that the dealer took back my 21 tooth gear when they gave me the 19. than I went 20/51 after.