Crash bar

How do i install crash bars i have a 2 peace set i want to install

Pics of them and the bike.
Steve

What motorcycle is it & are they the larger crash bars or the smaller engine guard case savers w 2-pt or 3-pt mount?
And are they correct for your model?

77 kz650 an is a smaller set

That was i got

Match them up to each side and take pics of the bolts.
Steve

You're probably going to need longer bolts. i couldn't find suitable 10mm bolts, as the ones available here had large heads & wouldn't fit into the engine recesses, so I got 3/8" bolts instead. You should look at you bike & reference the diagrams at Partzilla to figure out what size & length bolts to get.