Join Date: Nov 2007
Location: Toronto, ON
Bikes: 2008 IRO Angus, 2008 Jamis Exile 29er
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I would advise swapping out the rear cog rather than the chainring, if only because it's more cost effective. To get a better idea of what you're pushing, check out this link: The Gearing Primer
So you're pushing 81 gear inches right now, which is pretty high for the street. I'm running 71.5 gear inches at 45x17, but you could achieve roughly the same results with an 18t rear cog(72gi), or even run a bit lower with a 19t cog (68.2gi).
If you don't skid, ignore this, but taking a look at the second image, a 19t cog would be a good idea because it would give you 19 skid patches, as oppose to only 3 with an 18t. 17t would be good too, but 76gi might be too high.
Last edited by Jabba Degrassi; 11-16-08 at 05:46 PM.