Advice on sliding bed cover

I have a new 2021 Pro on the way, and want to get a sliding cover. I had a trifold before on my 2017,but it uses the rails.... which i would like to keep.

Also, i'm looking for something that gives me the most room in the bed, specifically able to still hold a mountain bike using a tailgate cover (if possible). With the tri-fold, I either had to prop it up which took out use of the rear window, or remove it all together.

Thanks.

 

Thanks. i'm looking more for the sliding kind that retracts ... like a Retrax, that can also lock.

 

my bad

 

Not at all.