almost finished my mtb build-up based on a kettler adventure aluminium frame from 1990. can't wait to try it out. : r/xbiking
KETTLER Quadriga X Comp - Hardtail E-MTB - 2019
This looks pretty much like the first mountain bike I had somewhen late 80s early 90s. Kettler Aluminum Rad | Vintage mountain bike, Mountain biking, Bike