chain line dimension on BB question
2006 specialized P3
if im ordering a replacement bottom bracket, its a Truvativ Howitzer Team BB
but it comes in two options for my shell width - a 51 chain line and a 56 chain line (i assume this is mm).
how much does this dimension matter?
If you have the old cranks still installed, you can measure the chain line you currently have:
- All About Bicycle Chainline
i actually saw that same article, i dont have the bike accessible to me right now though