How many of U change Ur chain when U change Ur sprocket rati
 

My chain is still way into the green after 55,ooo km's. I wanna go 2 up in the back. Do I have to buy a new chain and front sprocket at the same time?

Re: How many of U change Ur chain when U change Ur sprocket
 

it is strongly recomended that you replace the sprockets and the chain at the same time. otherwise they don't mesh quite right. I replaced the chain without replacing the sprockets on my previous bike (92, yamaha Seca II) and got away with it. it make a little more grinding noise, but other than that, no problems after 2 seasons. but when I have to do it with my SH, I will replace them all at once. due to the much higher torque and HP, I don't want to tempt fate. I'm sure that the stresses on the SH chain and sprocket are much greater than on the Seca. 60hp vs. 105hp.

when i went 1down 2up the kit came with a new chain, but i needed a new one anyway.

Re: How many of U change Ur chain when U change Ur sprocket
 

I got a good deal on a 520 conversion, both sprockets a chain from hardracing.com. I forget what I paid but those guys meet or beat anybody's price. They recommend you get a race chain though when putting a 520 chain on a litre bike so it's a bit more money.