Sprocket Gearing Questions

[markducatis2r]

Hey All,
I bought a 2005 S2R800 about 2 and half years ago. I have enjoyed every minute of it.
Its time to replace my chain and sprockets.
While looking closely at the sprockets I noticed the front sprocket is a 14Tooth and the rear is a 40Tooth.

I've read on the board about the 14T front sprocket mod but I don't think that a 40Tooth rear is stock.
What exactly is a 14T front and 40T rear doing for me?
Like I said I like the ride and have no complaints.
What could I except if I replace the rear sprocket with an OEM part. I'm assuming the stock rear has more teeth than 40.

thanks all

[JEFF_H]

stock size on the 05 is listed as 15/42
14/40 is lower in the front but higher in the back...should be pretty close to stock.

most people like gearing a little lower like a 14/42 or 15/44

[Dirty Duc]

If you are changing the set, go back to a 15 tooth front for better chain life and less wear on your chain guide.  Bump the rear up accordingly.

A 14/40 setup is approximately equivalent to a a 15/43, which is a good mix between acceleration and highway manners.  

14/42 is pretty peppy, but pretty rough on the chain and chain guide especially if you have raised the rear at all.  I'm going 15/44 in a few hundred miles.

You can get even bigger rear sprockets if you stick with a non-quick-change setup, but I go through a set in a year... if it was 2.5 years a set I probably would have stuck with the normal kind.  

[ducpainter]

Agreed on the 15t front.

A 44 or 45t rear will give you better acceleration.

It will also reduce top end by a small amount.

This site might be helpful... http://www.gearingcommander.com/