
Slackerizer is well made. I installed it without much hassle. Split crown race is a huge winner. Fitting needs to be done carefully. Notches help you gauge the center really well.
2° slack can really make a noticable difference, which I didn't expect. Bike feels a lot more stable on descends. Climbs are not noticably worse. This is pretty cheap upgrade, but it's an upgrade that'll make your bike more capable for sure.