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Discussion Starter #1
Hi all!

I am a proud owner of a TT600 from 2002. Since my chain need replacement I am thinking of changing my gear ratio to give me some more *umpf* at lower speeds and coming out of corners. From what I've read my stock gearing should be 14 on the front sprocket and 42 on the back but I'd like to go up to 15 on the front (less wear on the chain from what I've read) och then gear up (down?)the ratio by going 47 teeth on the back.

Has anyone in here done this on a 00-03 TT600? Could there be any problems with fitting a 15 teeth sprocket where there usually is a 14 teeth sprocket? Could this cause any problems with the chain guard?
Could there be any other problems that I haven't mentioned here?

You'll have to excuse my english since this is not my native language.
 

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I used 15/47 on a TT600 for several years. It was perfect for most situations, and it even resulted in a higher top speed. It fits fine. You can even go to 15/49 if you want a little bit more off the line.
 

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Discussion Starter #3
I used 15/47 on a TT600 for several years. It was perfect for most situations, and it even resulted in a higher top speed. It fits fine. You can even go to 15/49 if you want a little bit more off the line.
And that bike had 14/42 stock (ie it was a 2000-2003)?
 

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IIRC 14/42 was stock until mid to latter 2003 MY.
A 15T front sprocket will fit an early TT6 just fine.
IMO 15/47 is optimal general street gearing. If I did freeway/autobahn/motorway/autostrada all day long then I would go 15/45.
 

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IIRC 14/42 was stock until mid to latter 2003 MY.
A 15T front sprocket will fit an early TT6 just fine.
IMO 15/47 is optimal general street gearing. If I did freeway/autobahn/motorway/autostrada all day long then I would go 15/45.
14/42 and 15/45 are the same ratio's. They changed the sprockets because the chain kept banging against the protector and wears it down really fast. Use 15/42 or you will have more wear and tear/
 

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And that bike had 14/42 stock (ie it was a 2000-2003)?
One was a 2001, and the other was a 2000. I didn't have the 2000 for very long, but if I had kept it, it would have got 15/47 sprockets on it. The 2001 had a number of combinations on it, and it started out with 14/42. It ended up with 15/47, and a 520 chain instead of a 525.
 

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Discussion Starter #8
One was a 2001, and the other was a 2000. I didn't have the 2000 for very long, but if I had kept it, it would have got 15/47 sprockets on it. The 2001 had a number of combinations on it, and it started out with 14/42. It ended up with 15/47, and a 520 chain instead of a 525.
A big thanks to you Will and to B02S4. Will order the parts today.

I guess Justice meant 15/45 to avoid wear and tear. In that case the 15/47 should wear and tear even less! :)
 
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