I've carried my Allant all over the place on the Kuat NV 2. Kuat will tell you that the hook for the front tire needs to be all the way up by the fork and over the fender. But I prefer to hook the front tire just in front of my front fender - as seen in the pictures attached. But also, as
@Alaskan mentions, the metal fenders on the Allant are robust enough to handle the pressure without bending. Kuat also suggests that if you have concerns about your fender, you can stuff a foam block between the fender and the tire. I carry short lashing straps and one could easily also strap that front wheel to the tray as an extra measure - if choosing to hook the arm just in front of the fender rather than at the fork. I've done that with the Tern GSD but that is another story.
I started with the Easyfold but also found the bike spacing a bit close. Trying to find the right place to clamp the arms and adjusting the saddle heights to not conflict the handlebars of the other bike was a bit of a pain. I graduated to the Kuat NV 2.0 and found that much easier to load vs the Easyfold. I also prefer the fold-up design of that type of rack relative to the Easyfold (fold flat against the rear of the vehicle that is). The NV 2.0 works well with fenders as I described.
Just two weeks ago, I again graduated to the Kuat Piston Pro X. Initially, it feels like a retrograde graduation as I'm not liking the bike attachment as much. I will have the benefits of the lights (having my hitch lighting kit installed next weekend) and the extra corrosion protection but I feel the Piston Pro X lets the bikes wobble just a bit more on the rack. I prefer the hook arm + ratchet strap configuration of the NV 2.0 to the 2-roller arm configuration of the Piston Pro X. Kuat's solution for fenders with the Piston Pro X are velcro straps ("fender kit" for $30) to strap the rear wheel to the tray and to the roller arm just where the rear fender ends. I'm using automotive lashing straps instead of Kuat's velcro straps and using 3-4 straps total also lashing the front wheel to the tray. Although it seems to wobble a tiny bit more vs the NV 2.0, I feel pretty confident the bike isn't going anywhere. This might be the best review I found of the Piston Pro X and I agree with some of his criticisms. I might add that I don't see drain holes in the trays and they seem to retain water if the rack is down.
I've used the NV 2.0 for a few years now and I usually leave it on year-round removing it now and then, after the last snow fall, to go through the car wash. One ratchet arm failed I think due to salt corrosion and Kuat replaced it with a simple phone call - no charge. My hitch pin lock also is looking pretty bad and I should probably replace it soon - that is, if I don't decide to sell the 2.0. The inner tray gets all the road/salt spray and that is where the arm failed.
For the Tern GSD, I could carry it on a limited basis with some extra steps on the NV 2.0 although I'm certain Kuat would say that is a really bad idea (bike is about 80 poinds without batteries). I cannot carry it on the Piston Pro X because the trays are deeper and the wheelbase of the Tern GSD is too long. I don't think there is a rack on the market that will carry my GSD within the rack manufacturer's specifications. But speaking of that, I did recently become interested in the Quikrstuff Mach 2 (see Clint Gibb's videos) because it has the highest weight limit of any of the racks on the market and because of its modularity. But ultimately, I don't think their arm system will work with the cargo frame of the GSD which is built over the rear tire and fender. Also, per their website, they are backordered about 6 months.
The Quik Rack Mach2 is the highest-quality aluminum receiver-hitch bike carrier available. It fits any kind of vehicle, from cars to trucks
quikrstuff.com
Yakima makes a Kuat NV 2 clone with a nice, slight offset in tray height. It is about the same price. I have no experience with it. Yakima has an attachment add-on for lights and a license plate holder that runs about $250 (lights hook into the trailer hitch wiring). I think that Yakima combination is about $850 for the rack and another $250 if you want the lights. So a few hundred cheaper relative to the Piston Pro X - where you pay extra for the convenience of an all in one rack plus lighting system.
