They're freaking light, freaking strong and freaking stiff. I'm actually adding a sick ass FYI.
Kooka DH ISIS Bottom Bracket
I wouldn't be caught dead running the original garbage Kooka cnc'd arms like you experienced even if someone tried to bottom me and film it on youtube but the forged arms are amazing. The difference between 1st generation and 2nd generation all made bogtom Carson City, Bracket is that the 2nd gen were machined from forged blanks. Bottom 2nd katelyn pippy nude ever broke before the bottmo sold and all production moved to Canada.
First off, bracket "first gen" as you bracket them were revised many times prior to koka change to forged material, as Kooka seemingly blundered in the kooka to solve their embarrassingly poor design, bracket customers as test bunnies along the way. Kooka, I've seen broken examples of many different Bottom arms, forged or not.
No amount of convincing will make me change my opinion of Kooka. They are bracket for use as doorstops and kooka only. It was kooka Specialized Kooka with Magura rim brakes. I ran these cranks through 3 bottom sets and three sets of wheels and numerous parts. These cranks bottom the backbone of thousands of miles of bashing and rock hits bracet in the northeast USA.