Worth it. The heels were a pain they would always pop off the figure and the new pinned heels fixed that and as an extra hinge so it would cleaner in the back. The new weapons are a huge step up compared to the old bland and basic ones, I love how the upgrade kit came with the DK-63W parts like sword and shield, speaking of those, they're much better than the old one (seriously the old ones are trash), the old shield is Partsforming while the new one is transformable with a hinge and it also looks much better and accurate compared to the old shield, The old sword is not bad, I kind of wished it had more paint, but the new one looks better and I love the Cybertronian characters and symbols they look amazing. By far the biggest upgrades are the energon swords, the old one was on silver which is just trash, the new one is on a clear orange and the kit comes with two of them (they also gave me a bonus red version of the dual energon swords). And then you got the new weapons, first is mega striker which Optimus used in both DOTM and AOE, it looks really good and is quite accurate to the movie and I love the gunmetal look, the other new weapon is the arm blade/wrist blade (or as fans call it the nemesis daggers), the one featured on the tlk version of ss tlk nemesis is not bad but the dna one is better and they come in two. Now for the actual upgrades, I first talked about the new heels which are pinned but now I am gonna talk about the new arms and they look BETTER than the one on ss tlk nemesis prime, he also has elbow pieces that can detach (for partsforming) and they look accurate, but installing the new arms is a PAIN man, the tolerances were too tight, thankfully I used a hairdryer and it loosened it up and they're installed easily. Next is the new backpack piece (I am getting a replacement for it btw), and I am digging the extra hinges, I can now store my weapons without seeing the cab hanging on his back. And finally is the adaptor pieces, first one is an upgraded version of the old one, it has a sheath that matches the shape of the sword so it would fit inside and would not fall off all the time and it has two pegs for the nemesis daggers and the dual energon blades (both original and red version), and lastly is the 5mm port for storing the shield and the gun, next is the new spine piece which fill the gap on my figure's back and it has a 5mm port which imo is useless, I cant plug and store my accessories without it unpegging on its own and lastly is the new adaptor bit which plugs on the mushroom peg of the backpack and turns it into a shield which is dangerous imo cuz it leaves stress marks on the hinges but its ok since its optional. And that is my look on the DNA Design DK-63 Upgrade Kit for the Studio Series Age of Extinction Leader Class Optimus Prime. A good upgrade kit that comes with a few flaws but other than that its worth it.

the roof trunk bit is a little hard to attach to the feet roof bits but other then that it's amazing

OwO

very cool kit! weapon set is very good and has so much detail

Solid upgrade kit. Did have 2 issues assembling it. First being that all the mushroom peg connections were super tight. The second was that the way the backpack turns into a shield requires the hood to hinge in a direction that causes some stress marks on the hinges. These issues are fixable and avoidable though and everything else looks and feels great

Awesome DK-63 AOE Optimus

as far as looks go its amazing but actual usage is questionable especially for the changeable back piece that holds the weapons it wouldn’t hold the sword sheath and it would pop out