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
Kettler Scarpia FS 2.0 E-MTB im Test Offroad-Tourer mit großer Reichweite - Velomotion
KETTLER QUADRIGA TOWN & COUNTRY COMP C2 review | E-MOUNTAINBIKE Magazine
Kettler Velossi 2.0 - Pinion
HKS Kettler ALU Rad Mountain Bike 55 cm Shimano DEORE SR MTS-100 1988 | eBay
QUADRIGA PRO BELT | KETTLER Alu-Rad
KETTLER Quadriga X Comp - Hardtail E-MTB - 2019
First Look: KETTLER Alu-Rad Scarpia FS 1.0 LTD Gold – das neue E- Mountainbike von Bastian Schweinsteiger? | E-MOUNTAINBIKE Magazine
QUADRIGA DUO CX SPEED | KETTLER Alu-Rad
26" Kettler MTB | Mysite
KETTLER Alu-Rad | Bikes & E-Bikes
26" Kettler MTB | Mysite
Amazon.com : Bike Derailleur Hanger MTB Bicycle Tail Hook Parts Dropout 94 for GT Aggressor Avalanche KHS Timberline Kestrel Kettler Mongoose Java 20 inch Bike Reborn WG007-SL Silver 2.17x1.18x0.47'' : Sports &