- the only way to check is with a PDF file (printed and cut out), I'll be trying to do the PDFs for you guys today...The rear kit is the same disc as the front, 300x18.
There's also a 296x28 front kit that uses the other side of the same bracket ( 
) but it's heavier, I'm hoping the 18mm one will work fine for most people as it's lighter and a "nicer" disc in my book.So if you fit the 300x18mm one and decide you want the extra thermal
(but of course also rotational) mass, we just supply the 296x28 discs and the 28mm caliper spacers and you're away!
