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Hi. Has anyone ordered a ducktail from the new 718 gt4 at porsche? Wondering if it will fit all cayman 718?
Gt4 ducktail
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It is my understanding that on the GT4 it is fixed, it is speed activated on the Spyder.
If these were implemented like the were on the 981 (no reason to expect otherwise)' the ducktail should fit.
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Just called the suncoast to see if they are direct bolt on but they say no..?
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Too bad the 718 GT4 ducktail won't fit. I would have loved that! Has anyone found another source for a ducktail? I want it unfinished so I can paint match it to the body.
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The one suncoast is selling is from the spyder and will only fit the boxter. So we dont know if the one for the gt4 wont fit.
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I thought so
Unless the front bumper and rear diffuser is replaced with Spyder’s as well.
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Here's an option I just installed recently. I'd include pix of what it looks like on my agate gray base Cayman, but my underground condo garage is too dark. It does look great, however. I think it may be a little more shallow than the GT4 version so less likely to become a brake. It is part of an aero package that I've put together of TWL carbon fiber parts that I'm not going to repaint because of the color of my car. Two other parts I have and need to install are front splitter and rather aggressive rear diffuser. You can see versions of those at the same link.
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I think this is actually a valid point. The duck spoilers look great when they are in the down position but I don't think the mechanism is designed to have as larger surface area so no doubt when it is up and at very high speed it will increase drag and might be more like an air brake.
The proper spoiler/upside down wings are designed to be aerodyanmic with less drag but produce more down force at the same time.
I know Porsche went to a lot of trouble to design the aero on the new GT4 to generate 50% more downforce without increasing drag.
When you look at the stock wing/spoiler while extended, it looks to have about a 40% forward cant and its bottom is rounded like an upside down wing. I'm thinking Bernoulli effect. The TWL duck tail has the same cant as the stock and not much more but rounded upper side back ridge, but it does exaggerate and extend the bottom roundness. I see an enhanced Bernoulli effect. Then again, I'm not an aeronautics engineer and I spent money on the thing, so I'm hoping it does more than just look cool! 
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Agreed but I would go a step further. Like most car manufacturers Porsche go to a lot of trouble to design the aerodynamics to work as a package on the car.
Change one thing and you are likely upsetting the whole balance. If you fit GT4 addenda to the rear, what are you doing at the front to offset the changes you have made at the rear?
Have you taken into account the fact that the GT4 has aero underneath it that works in tandem with the front and rear aero etc.?
I know we are only talking about the small ducktail spoiler in this instance but I can't see how ad hoc changes to a car's aerodynamics package is going to result in material gain. If anything it is likely to do the opposite.
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@MG718 It is the policy of this forum to not allow personal attacks.
Do you want to re-phrase this, or do you want me to take care of it?
(Hint: You don't).
Any chance you've heard an update from Suncoast?
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126 Posts
Also still interested in this. I want the ducktail but OEM look and painted to match the rest of the car. I don't like the carbon fibre look.
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Awesome, keep us updated! I really hope this fits. I'd prefer painted OEM looking ducktail instead of a full wing.
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