Been wrenching and riding my own sleds for two decades now, but new to Yamaha mountain sled ownership (actually it's my brother's sled, but I get to do all the wrenching) Did a lot of searches and scrolled back to posts from 2006 page by page, most info is on the MM700- but I assume chassis wise, things are equal.
Sled = 2000 MM600, bone stock currently, stock 141 track is junk.
Usage = 100% off trail sled, mostly U.P. with the occasional trip out west.
Based on what I've read so far, we have a reasonable plan, looking for input & direction now:
Chassis Items:
1) MPI transfer kit for rear skid.
2) Going with 144x2" Camo track. Will straight setback fit this? (any pics would be appreciated)
3) Stock ski shocks seem cheesy, any direct bolt-ins that are better?
4) 3" pivot riser and maybe additional 3" block- will stock cables allow for 6" of rise?
Engine Items:
Trying to be frugal and get best bang for the buck here (aren't we all!)
1) Planning on using reed spacers, stock cages, Boyesen power reed petals
2) Billet head set, stock pipes, & MBRP can < or >
2a) Used triple pipes and maybe thin head gaskets on stock head
Clutching/Jetting items:
If I could get a P-85 for free, is it worth changing out and what model P-85 would I need? I know Polaris clutching, never done a Yamaha.
- other gearing recommendations?
- Jetting stable with pipes and/or head mods?
Any other tips or tricks appreciated!

Sled = 2000 MM600, bone stock currently, stock 141 track is junk.
Usage = 100% off trail sled, mostly U.P. with the occasional trip out west.
Based on what I've read so far, we have a reasonable plan, looking for input & direction now:
Chassis Items:
1) MPI transfer kit for rear skid.
2) Going with 144x2" Camo track. Will straight setback fit this? (any pics would be appreciated)
3) Stock ski shocks seem cheesy, any direct bolt-ins that are better?
4) 3" pivot riser and maybe additional 3" block- will stock cables allow for 6" of rise?
Engine Items:
Trying to be frugal and get best bang for the buck here (aren't we all!)
1) Planning on using reed spacers, stock cages, Boyesen power reed petals
2) Billet head set, stock pipes, & MBRP can < or >
2a) Used triple pipes and maybe thin head gaskets on stock head
Clutching/Jetting items:
If I could get a P-85 for free, is it worth changing out and what model P-85 would I need? I know Polaris clutching, never done a Yamaha.
- other gearing recommendations?
- Jetting stable with pipes and/or head mods?
Any other tips or tricks appreciated!
