2000 thundercat gearing

15 wide 72 pitch chain with 24/39 (116mph) gearing. 22/41 uses a 72 pitch chain and is good for 100mph.

My M/C 1000 came with 19/39 it screemed, it would all depend on how much track your going to run. The 19/39 Im thinking would have no prob with 2"x 159 to 162

RUN 20/44 or so.If you like to be on the gas when jumping and stuff the 19 top gear will RIP the chain apart. With the gears you are running you should see higher speed that what you are. So I would guess you are either running out road in the straights or your clutching is off a bit. With those gears you should be able to hit 100 before the clutches shift out fully. Get the strongest chain and gears available cause when you gear down this much the chain becomes the weak link. No pun intended. You will sacrifice top speed a little but when you boondock your drive belt will run A LOT cooler. I ran this set up is a zrt 8 136 and when it came to boondocking up through the trees when we would stop I could put a hand on the belt. A friend of mine had a zrt 6 and you could fry eggs on his cluthes. Don't know if you can get the hyvo chain and gears for yours but if you can for the money get them. WPS is one place to look, these are the polaris chain and gears much tougher.I personally would go 20 45 or 46. You will not believe the difference in belt life, and launch especially on harder snow. You can put a different helix on to load the engine to keep it from over revving, just go less angle on the helix. This will change your back shift some but that can be corrected with spring tension in the secondary.

99 1000 t-cat

i run 20/42 or2.1 with a16x2.5x162, 9 tooth drivers, aaen tripple pipes, fabcraft tunnel, light weight hood.think i"m going lower.she blows by the xp[stock] at the top of a long pull :beer;