plodder wrote:Ignore me, I've got a 3TJ

The R6 shock has something like a 600 lb/inch spring and about 1.5" stroke (It's fkn solid)

The R6 is 560lb/in and the fzr400U states the same 560lb/in but the 3tj is 336lb/in
Big differences

Do you happen the weight of a r6 shock (approx)? Want to work out the postage from US to Australia

Whatever the spring rates of other bikes the R6 shock is to hard for ther R6 as well !!!

I've put a FZR1000EXUP aftermarket Nitron shock on the 4003TJ (seeing as I had one spare). It has a 425lb spring and is pretty much spot on.