YZF sprocket with tapered bolts?

I found this:

"Any YZF rear sprocket will fit, you'll just have to change to tapered sprocket bolts (which aren't a bad idea to replace when you change sprockets anyway)."

Does this mean I can buy this sprocket?

http://www.qualitysmart.com/products/sprockets/vortexracing/vortex_racing_sprocket_yamaha_yz250f_01-08_208_3217.html

I want to use a 45t in the back, which is hard to find. And these look really nice!

Does you guys think this sprocket would wear out quickly because it's aluminum? I mean, we're talking less horsepower than a wr250f. And this company says they use the "highest grade 7075 T6 aluminum"




Here is an interesting question. Wouldn't a lower tooth count on the rear sprocket lower the wear? Effectively you are making less torque at the rear end, right? So wouldn't a 45t wear less than, say, a 50t?

gazelle wrote:

Here is an interesting question. Wouldn't a lower tooth count on the rear sprocket lower the wear? Effectively you are making less torque at the rear end, right? So wouldn't a 45t wear less than, say, a 50t?

The fact that the sprocket is aluminum will outweigh any other factors. "Highest grade" aluminum? Doesn't matter, it will not last as long as steel. The only Q is how big is the difference. According the mechanics at the Yami dealer near me ... the answer is quite a bit. And they both ride dirt.

So you agree that a smaller tooth will will make some sort of difference? I mean, yeah, obviously the fact that it's aluminum causes the biggest difference. I just figured that it being low on hp, low on sprocket tooth size, and being good quality aluminum that maybe it will last quite a while. My yz450f would tear throw aluminum sprockets like butter. But there we are talking 50hp as well as gobs of torque combined with a large rear sprocket. I know this may just be wishful thinking, but I would love justifying buying the vortex.

I may just pull the trigger on it.

if you want the flashy look of the alloy sprocket, find a SuperSprox Stealth. alloy carrier with steel teeth. there is a few brands do them but the stealth looks the strongest joining method to me.

Tooth count on the rear within reason won't have a measurable effect on wear. Larger front sprocket does. Ironman sprockets are the most durable I've ever seen or heard about & nearly as light as aluminum.