Canada700
Member
Has anyone switched out their top gear to a 20 tooth? what's the pros and cons?
20 Tooth top gear
- Thread starter Canada700
- Start date
0neoldfart
Active VIP Member
Based on your signature, I'm guessing you have a 2013 M8, which has 2.33:1 gearing (21/49 gearset). Going to a 20 tooth upper sprocket will regear the sled to 2.42:1, which works very well in the hills and reduces clutch heat. The 2014 and up I believe use 19/50 for a ratio of 2.63:1. In my personal opinion ONLY, the 19/50 is too low, and track speed suffers as a result. If you primarily ride your sled locally, keep the stock gearing to minimize overshift and keep RPM in check. But if you pretty much only ride in the mountains, the 2.42:1 ratio is ideal in my humble opinion, as it loads the motor a bit harder then the 19/50 gearset as found in the 2014 and up M800.
Shredder
Active VIP Member
I couldn't agree more. My 2012 at 20/49 made way better track speed and pulled ALOT harder in the middle of a climb than the 19/50 in my '14. Enough so that I just installed a 20/49 Hyvo kit in my '14. The 19/50 just feels like it holds the sled back. Revs are there but you aren't going anywhere.
mountianman
Active member
Do you know how much the gearing change is when you install the 7 tooth driver that comes with the 3" track? Thanks
northof40
Active member
Another vote for 20/49. Had 21/49, then switched to 20/49, and then 19/50 on my 13. Went back to close to the 20/49 ratio when I went to a belt drive.
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Quattroman
Active member
Yep, Another vote for 20/49.
On my '12 i originally tried just the 20t from SLP, then with the 'updated' 19/50 set. Went back to the 20/49, Its the best all around. I have the Dalton adj weights that took quite abit of tinkering to find the happy place.
On my '12 i originally tried just the 20t from SLP, then with the 'updated' 19/50 set. Went back to the 20/49, Its the best all around. I have the Dalton adj weights that took quite abit of tinkering to find the happy place.
0neoldfart
Active VIP Member
Going to a 7 tooth driver is basically using 89%. So a 2.42:1 ratio with 8 tooth drivers will equate to a 2.63:1 final drive ratio with 7 tooth. Personally, I went with 2.33:1 with 7 tooth for a final ratio of 2.56:1
0neoldfart
Active VIP Member
Correction: I looked yesterday while doing some pre season maintenance. Using a 2.21:1 ratio with 7 tooth drivers on my 3", final drive ratio is 2.45:1
