There are products that are so unique that they burn themselves into the collective consciousness of the mountain bike community. The bright yellow Gravity wheelset - aka Deemax - from Mavic is indelible in this memory. Honda's commitment is also downright legendary: when the Japanese build a mountain bike, the engineers go all out, and the new e-bike is no different. And with Kästle, a - very old - acquaintance rolls back into the studded tire limelight.