Good deal on eBay from a company in Irvine CA, Jeremy well industry- 10 ft chain comes with 2 links. $14. Buy a moto chain breaker on amazon for $10-15, Harbor Frieght chain breaker broke the first time i used it - don't buy. You can splice to your needed length and have extra in case you you mess up the first one or break or crack any in the future. Have bought #35 and #41 from them and raced with them with no problems. 10 Ft seems like a lot but is really nice having at least another length as back up. You will use a little over double the length of your front and rear sprockets. If you really need to be specific on length cut / use a string or shoelace and wrap over the sprocket teeth (front to rear like a chain) and you can measure from that length. Straightness is key - lay on your chain and look down the top of the chain like a gun sight - should be very very straight.