Why do 510 tubes bolt up into my A48 frames perfect?
Every 20 inch tube I have found fits perfect into the 19 inch frames. Anyone care to explain this? Should I be throwing away my 510's? I mean if the 20 inch tube will fit, will the 19 inch chassis work with them?
Every 20 inch tube I have found fits perfect into the 19 inch frames. Anyone care to explain this? Should I be throwing away my 510's? I mean if the 20 inch tube will fit, will the 19 inch chassis work with them?

