as some of you may know. my 05 cbr 600rr came with rear arm extenders on it from the dealer. the back is stretched out over 6". i wanted to put the wheel back where it should be, so i purchased the vortex 520 kit -1/+2 in a 15/45. it also comes with a RK520xso gold chain. so i am on the way to bringing it back. i was wondering if anyone has any experience with the brand or this exact setup??

 

It's a good kit. If you went with an aluminum rear sprocket it won't last as long as a steel one, but other than that I think you will be happy with the results.

 

how long are we talkin?

 

I installed it on my 600rr. I have no complaints so far. I went -1 in the front, stock in the back. rpms are higher, mph is off. thats all.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIVIC 3 &raquo;</TD></TR><TR><TD CLASS="quote">how long are we talkin?</TD></TR></TABLE>

5-7k miles for aluminum.

 

If you're gonna go 520 don't be a ****** and get **** sprockets. Get the following for 520:

AFM front sprocket
Stealth Rear Sprocket
DID 520 chain

 

is the mph going to be off on a -1/+2 setup?

 

yes. By a lot. Get a speedohealer

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIVIC 3 &raquo;</TD></TR><TR><TD CLASS="quote">is the mph going to be off on a -1/+2 setup?</TD></TR></TABLE>

Yes, I have a -1/+2 setup on an 01 f4i and at a true 40mph your speedo will read about 45mph and at 70mph it reads about 80mph. I have the vortex sprockets with DID chain and I have zero complaints thus far. However, the next time I do new sprockets and chain I am going to keep the front sprocket stock and go with a +4 rear. It will give you the exact same results as a -1/+2 setup without the extra wear of the smaller front sprocket. There is a huge writeup on it over on sportbikes.net and because of the smaller front sprocket the chain has to make a tighter turn around the shaft making the chain wear faster. Just my .02