PEUGEOT 1950 Touring Bike Frame 650 57x57cm 3445g 121mm BFFF

This Peugeot frame dates from 1950 and was built in France for a touring bike rolling on 650B wheels. It measures 57x57cm and tips the scale at 3445g. French threading runs through the build: 35x100 at the bottom bracket and 25x100 at the fork. The frame shows oxidation — a detail worth weighing before you commit to a build. Everything visible in the photos belongs to the description.

What the numbers tell a builder

; the 650B diameter — 584mm — anchors the build in the classic French touring format. The 3445g weight sits in the steel era's expected range. Fork and bottom bracket threading are both documented, which saves you guesswork at the workbench: 25x100 at the fork, 35x100 "French" at the shell.

Because the frame carries oxidation, plan for surface treatment and a close inspection of tube junctions before repainting or clear-coating. That is the trade-off of a 1950 frame at this entry point: character and correct period geometry, with cosmetic work left to you.

A hub to explore the rest of the catalogue

Key specifications

Technical details

• Country of origin: FRANCE
• Oxidation: Yes
• Material: Steel
• Size: 57
• Bottom bracket threading: 35x100 "French"
• Fork threading: 25x100
• Wheel diameter: 584mm – 650B
• Manufacturer part number: 0000

Before you commit

Oxidation is documented and visible in the photos. Beyond that.