# 520 conversion and sprockets...questions **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [June 19, 2008, 6:16pm UTC](https://forums.speedlife.net/t/520-conversion-and-sprockets-questions/50289 "2008-06-19T18:16:59Z")\ **Posts on this page:** 1\ **Showing post:** 4
**Author:** ![Paulo](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/paulo/32/7328_2.png) [@Paulo](https://forums.speedlife.net/u/Paulo)\ **Post date:** [June 19, 2008, 6:42pm UTC](https://forums.speedlife.net/t/520-conversion-and-sprockets-questions/50289/4 "2008-06-19T18:42:06Z")
520 refers to the sprocket/chain thickness. with a thinner chain/sprocket combo, there will be less rotating mass, and in most cases you will see a small gain in power. But when you gear it differently, i.e. -1 in the front and +2 in the back, the bike accelerates quite a bit faster and takes away from the top speed. (which you should know) this is why stunters go up alot in the rear, for low end power. brand will make a difference, stick with the big guys and you shouldn’t have a problem. If you really need to replace the chain, sprockets don’t add much to the cost, so you might as well make a difference on the bike. BUT if you get a 520 chain, you need 520 sprockets. and vice versa. --- _[View the full topic](https://forums.speedlife.net/t/520-conversion-and-sprockets-questions/50289)._