2013 tacoma longbed rail cap - why can't I find these aftermarket?

One of my rail caps fell off and I cannot find a replacement. I haven't gone to Toyota yet, but figure aftermarket would likely be cheaper if they existed which they seem to do for other brand of trucks. Anyone here know where I can find a 2013 longbed rail cap? Or perhaps I'm using the wrong terminology and you can tell me what that plastic piece capping my bed rail is called.

Thanks

 

Pic of area in question would help greatly.

 

https://www.kbvoodoo.com/shop/powder-coated-bed-side-rail-cap-system-fits-years-2005-2015

 

Cheaper? No- I think the stock ones are around $65 each, about 10$ more for the long bed. Stronger? Yes, the KBVoodoos linked above are stronger and at 1/4” thick are 1/2” lower.

 

thanks! I've been riding around with one missing for years now. Always wondered about aftermarket ones and couldn't find them at the time. And when I looked you could only buy factory ones in pairs, which was around $100.

 

right on. Thanks everyone!