let me share again some info, I do appreciate if a bit more attention is spend with regards Kästle bikes here
Info from an buyers guide 1996
Ad from 1996
A Marzocchi DH3 fork was original equipped, a bit surprising and outdated for 1996, no ahead set was used.
As mentioned at the ad, the bike came with the interesting brake system.
Maguras with specific Kästle brake pads with tooth, and specific rims fitting to this.
I've never used something like this, but the idea was mostly to increase the surface between the pads and the rims.
In particular this will be hard to get somewhere these days.
The iconic Kästle cranks do come up once in the while at ebay or classiefieds, just mostly overpriced.