Dale's Wheels Through Time - Harley-Davidson built a 125cc two stroke starting in 1947. These bikes were popular for young riders. Contrary to Harley lore these were built right in Milwaukee, Wisconsin.
1948 Harley-Davidson S-125 | HowStuffWorks
Harley Davidson SX 125
Harley-Davidson: 2018, la révolution du Big Twin Custom (vidéo)
1948 Harley Davidson Model 125
Harley-Davidson - Aermacchi SS - 125 cc - 1980 - Catawiki
1950 S-125 Harley-Davidson Scooter Custom, by Mike Wilson - National Motorcycle Museum