[SOLVED] How to remove last two fields

[z3nith]

I have a filename
file-name-here-1.2.3-i486-2.tar

I would like to know how to remove the last two fields leaving only:
file-name-here-1.2.3

I can use:
x=file-name-here-1.2.3-i486-2.tar
echo ${a%-*}

to remove the last field (after -) but how do i remove the last two in one fell swoop?

Thank you gurus

[blinky]

echo ${x%-*-*}
or
echo ${x%-i*}

[z3nith]

Beautiful. Thanks a bunch.