Mine are aftermarket not stock. These are the lowest cost bars I think you'll find but they are still good quality.
I got them from JCWhitney for $151. with a $20 off coupon shipped to my door. I installed them myself in about an hour. It was very easy. You only need a socket wrench (12mm & 1/2") and a socket extension....oh and a level to help to install them level.
I'm not sure if this is what you are looking for but I hope this helps,
Dave
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2007 Crewmax Limited Nautical Blue.....
This will be an AWESOME tow vehicle....now I just need a boat