You have to remove headliner on both sides. You don't need to lower it in total but make sure there's access on the sides. Remove the grips on front and back, remove all interior parts in the back. The rails are bolted on with 4 bolts. There's an airbag in the way but with the right tools you can get the bolt out. I took mine out and replaced them with glossy black ones from a R Design car. It took me about an hour per side to get it done.

 

Awesome thanks! Thats about what I was expecting and just glad to hear they are not bonded down too or anything. So main hassle is getting the rear trims out and then just space/access to the bolts around the side airbags then?

 

Yes, and you will probably break the plastic guidance nuts when you take them off. You can order these at the dealer.

 

For the trunk, wait for a warm day and use a heat gut ....then when warm use fishing line to slowly "saw" off the spoiler. You will need to then scrape off all the adhesive/tape which takes a while.

 

Realised i forgot to mention its a wagon so was hoping it was [just] bolted on...? Are you referring to a sedan here?