Ahhhh ... more greaseless talk ........ Let me put it in simple terms ............. I'll never run with grease again ......... ever !!
Besides Hunterworks for greaseless a setup, now there's UTVCrap that sells the parts as well ... and they are cheaper ....
.... and www.utvinc.com/YAMAHA-GRIZZLY
When it comes to rollers weights,Hunterworks sells two weights - 16 grs & 18 grs. UTVCrap sells them in the following weights - 12 grs, 14 grs, 16 grs, & 18 grs.
Stock rollers in a 660 Grizz weigh in at 17.9 grs. Ihad a Dalton clutch kit in (one of my first mods) for 27 to 28 inch tires above 3000 ft elevation, they came in at 17.1 grs.
Then I bought a machined sheave from Fix Power Sports (for a Rhino), that came with new rollers, they came in at 16.1 grs. (personally, I didn't like that weight at all) ... The Grizz would run like a demon ... but I never had a long enough area to really run it to the top. However, the engine breaking sucked ... casue there wasn't any !!
I've been playing around with different weights and like weights that are 22.7 grs (each) ... but you can't get'em any longer from the above companies. So I've ordered them right from the factory which is in Taiwan. Kinda pricey ... but amI to do ?? And, I just put some 25 gr weights in and as soon as I get my bike back together (my winch sh*t the bed !!) ... I'm gonna try them out.
BTW... the company doesn't sell 22.7 gr weights ... I had to buy a set of 25 gr ones, take them apart & drill the weight to lighten it up. (That's another story if anyone ever does that, let me know)
Now you ask, what do the heavier weights do ?? Well, first, you lose top end speed, so if ya like to go fast (say, above 45 or 50 mph), you may not like these. But they will get you there very quickly ... IMO. .... Very snappy off the line ... you can crawl way better, and that's what I like to do. And the engine breaking is greatly improved.
Iwant to also say, when I ran my tracks last winter, I started out with the 22.7 gr weights in. Then went to 18 gr weights ... and liked it better. This winter I'm gonna put in some 16 gr weights & see how it acts ... but remember, the tracks have a built in gear reduction & I feel I need more top end speed ..... so we'll see when the snow flies !!!
But at $50 to $65 a pop, it's kinda pricey to experiment .... unless yer like me & say, ............ WOOHOO!!! .......... well, that isn't exactly what I say, but I can't use the words I normally use ........ Savvy ??