i love my ebay pulley....especially for the price
i figure, who needs customer service on a solid 1 piece pulley.....
my ebay pulley uses the same puller as the stock pulley does.....the mpx one looks like it would need a steering wheel type bolt puller

and just fyi: when you take off the stock pulley and put the new one on there, make sure to put some anti-sieze on the crank end that the pulley slides on.....otherwise it might be difficult to take off again if you need to, the steel on the crank and the aluminum of the pulley can basically "weld" itself together and give you a real hard time

 

You can use a steering wheel puller to get it off...its easy!

 

thats what i said

 

hahaha thanks you guys

 

a UDP is a UDP, find out which one is lighter and go for that one, because thats where the difference comes in. The UDP feels better not only because of the less load from the components, but because its smaller, more than likely lighter, which equals to less rotating mass. It wont be as big of a difference, as say a lighter flywheel, but anything that rotates that can be lighter WILL lead to a faster accelerating engine. Its just physics

 

Same thing goes with wheels, do you feel faster with 13's than you do with your 17's? Well yeah, lighter. Plus I think the diameter has something to do with it, and how far out the centrifugal force can go. Its like some exponential value. That a 13" wheel the same weight as the 17 will be better than using the 17.... though the light 13's would be best choice.

I dunno if that info helps you any, it was probably pointless because those pulleys are fairly light to begin with anyways