I havnt been in the loop for awhile so dont know if anyone has found new good combo's as far as the 520 combo goes!??

I have all 530 stuff with an aluminum rear right now but was hoping I could make the 730 rev up a little quicker while UPshifting to beat the yfz's up sand mountain [img]i/expressions/face-icon-small-smile.gif[/img]

I am on a tight budget so am not 100% if i will do it just yet but was wondering what my options were and what pricing would be. What would it cost to have a random shop machine the rear hubs down to a safe size? (hightower you still have those specs?) I want durability but want to save weight.

What is a good 520 combo that wont break the bank? assuming its adjusted properly can i expect the 520 to last with 70hp and hard launches? im all about reliability because when i do ride I dont want to deal with things breaking but faster = funner! [img]i/expressions/face-icon-small-wink.gif[/img]

what would be the overall weight savings with 520 change and both sprockets (would aluminum in 520 last or does it need to be ti-moly or another material?)

any input is greatly appreciated!