I've used Red Horse Performance fittings before. There prices are decent.

Red Straight Hose Ends – Redhorse Performance - We Bring Fast Things To Life

 

I think he was looking for ptfe compatible fittings

 

Customer service was pretty good. Each time I called they answered the phone and were pretty helpful. The shipping on the other hand was definitely delayed. I placed the order on a Sunday, by Thurs it was still showing as "processing" in their online system so I called them. I think the company is just an office that sells a whole bunch of stuff via drop shipping. They prob have 10+ websites they sell product on. The girl said they don't stock Goodridge stuff so it was probably waiting on Goodridge to fulfill the order. She told me shed call Goodridge and get back to me, which she didn't. I called her at the end of the day and she had forgotten. She promised to call in the morning. The next morning I received an email saying the order had shipped.

So, if you order from them expect about a 3-5 business day "processing" delay before your order ships out. Id also advise calling them on the 3rd day to give them a kick in the *** to get the order over to Goodridge. Im pretty sure my order was just sitting in their queue the whole time.

That in mind, their pricing is pretty much unbeatable.

Im not really familiar with the Koul system but it looks like its a crimper? Goodridge offers two styles of hose ends for use with their PTFE hoses - crimp on and reusable. I got the reusable style, which pretty much just threads into the hose and secures with the collar. Ill post some pics of the installation process.

 

Yes. From what I found, most every manufacturer of PTFE hose will have a specific style of hose end specifically designed for use with their hose, so you really don't have a choice. Most require crimp on style hose ends. Goodridge was one of the few that offered an extremely high quality hose with the option of a reusable hose end.

There are several Goodridge PTFE hoses available to suit different budgets.
911, 811, and 825 (from most expensive to least). They all look very well made and all feature the same hose. The differences are just in the outer material (aramid kevlar fiber, steel braid, and polyester).

 

The koul system is just a setup to hold the fitting and guide the hose in to make for easier assembly with less hassle of getting the strands in completely.

I have the -4 through -16 set. Hoping to make life easier.