Right, im thinking of buying the Tryall bottom bracket and crank deal (if i get chance before the offer ends) found here - http://tartybikes.co.uk/product.php?produc...category_id=534 This is for a mod (zoo lynx), i noticed that the bottom bracket only comes in 122.5mm axel length where as the other one purchased seperately has the option of a 127.5mm. What difference will this make, but more importantly is it going to be ok on my bike? This might be a bit of a wierd question but i have confused myself quite succesfully. Thanks Stevie