This is an offset bottom bracket for threaded frames, with an inner component that threads on held in place with torque and loctite, and the outer shells that contain the bearings are held in place by a pin that fits into slots in the inner piece, plus two screws. The two sides have to be indexed to each other. If you've installed one you know how it works. Normally the non drive side shell is not completely torqued to allow indexing (held in place by loctite), but I used shims and some muscle to get the two sides both well indexed and torqued down (plus loctite anyway for good measure).

The typical application is for bringing a single speed chain up to tension. My application is a bit different, I installed it on a S4 status 160 to bring the Front/Rear balance into more reasonable numbers (Lengthening the chainstay from 426mm to 429mm and shortening the reach from 487 to 484mm). It's a weird experiment, but I'm having fun experimenting.

My question is mostly whether this setup is robust enough for bike park duty. Is it going to slip when I land a jump and kill me? It actually looks and feels incredibly sturdy, but I haven't been able to find any long term reviews, it seems like it's such a niche product that it's difficult to find info on it. Maybe I need to draw a force diagram between the various components and see if anything would give. It's only offset 3mm so it seems like the torque wouldn't be very high. Plus, I have a lot of suspension. But I do weigh 190 lbs and have a bad habit of coming up short on jumps.