A: It fits great on mine. Be mindful how tight you get the bolts though, the sidebar can bend if you go too tight. Plus DO NOT lose the part that actually holds the ax and shovel, unfortunately they don’t sell it separately and I had to buy a whole new one because I had lost the outer piece. 

A: You need the mount with the adapter brackets (SB-D8138). Google is your friend, that is, at least for searching the internet. 

A: two bracket bolt stud holes between is 5 1/2",  and the bracket curves? around 1 1/2"

A: Yes the Smittybilt Axe And Shovel Mount - D8138 will mount to the Smittybilt Defender Rack Tailgate Bolt-On Basket - 76718

A: The back plate has four bolt hole locations. If your rack has a place to insert four bolt in the same spots, then it will work. There are two models of the shovel/axe mount, choose the one that best fits. -Best!

A: Shawn- Thanks for the question. Although it's not an official I-Rack mount you could try and adapt it to your I-Rack.

A: Hello Chris, Yes, the Smittybilt Axe And Shovel Mount S/BD8005 is designed to mount on the roof rack systems. Thank you for the email.

A: Trey the Denve does not have these in stock bu the Colorado Springs store does. if you go to the store i am sure they can transfer them from the Colorado Springs store for you. thank you