lingo75 Posted January 28, 2009 Report Share Posted January 28, 2009 Hello Chaps - im gonna get a new chain on my bike and thought i get a new sprocket as well. Have seen some nice red Talon ones on Ebay. They come in 40 or 42 teeth. Its to dark after work to go and count how many i have on mine. Which should i go for. I guess the more i have the lower the gearing so i was thinking 42. Many thanks! Quote Link to comment Share on other sites More sharing options...
ham2 Posted January 28, 2009 Report Share Posted January 28, 2009 You may need to cough up more info on your bike as I remember the 315 gearing changed from year to year..maybe..or get y'sel a torch. Quote Link to comment Share on other sites More sharing options...
lingo75 Posted January 28, 2009 Author Report Share Posted January 28, 2009 AH good point - its a 1999. But i guess i can put what ever i like, teeth wise, on in theory - to change the gearing? Quote Link to comment Share on other sites More sharing options...
tt5th Posted January 28, 2009 Report Share Posted January 28, 2009 If you've got a 10 tooth (which was standard) on the front then the 42 should lower it nicely. If like me you have 9 teeth on the front then it seems to work nicely with the 40. I haven't helped have i? Go and get the torch....... Quote Link to comment Share on other sites More sharing options...
lingo75 Posted January 28, 2009 Author Report Share Posted January 28, 2009 Hi all, Looks like its torch time! thanks for you help anyway and i will use your advice once i determine the teeth on the front cog ta Quote Link to comment Share on other sites More sharing options...
cypher Posted January 28, 2009 Report Share Posted January 28, 2009 10 / 40 was standard for the first couple of years of the 315, then it changed to 10 /42, dont know if there was any internal gearbox changes. just buying a chain and sprocket for my 97/98 bike and was advised to go for the 10 /42 combo. Quote Link to comment Share on other sites More sharing options...
milfy Posted January 28, 2009 Report Share Posted January 28, 2009 can confirm 10/40 on mine 1999 but will be changing to 42 rear find gearing to high Quote Link to comment Share on other sites More sharing options...
jonathan collier Posted March 15, 2009 Report Share Posted March 15, 2009 With the 10/42 combo is it 106 links needed? Quote Link to comment Share on other sites More sharing options...
lingo75 Posted March 16, 2009 Author Report Share Posted March 16, 2009 Hi mate - i didnt count the links i just laid it down next to the old chain Quote Link to comment Share on other sites More sharing options...
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