This classic French steel frame from the renowned artisan builder J. DUBOSCQ offers an exceptional, period-correct foundation for vintage road restorations. Weighing in at 3032g (including the headset), this frame represents classic French craftsmanship. It features French threading (FF) and comes equipped with a high-grade vintage Stronglight Competition headset, known for its longevity and smooth needle-bearing performance.
Classic French Frame Geometry
Engineered for endurance and balanced handling, the frame is designed around a square-ish vintage geometry. The seat tube measures 54.5 cm (measured from the center of the bottom bracket to the top of the seat tube) and the top tube measures 54.5 cm (measured center-to-center). This versatile sizing makes it highly sought after for retro sport or performance builds. For those looking to complete their vintage front end, you can pair this frame with a high-quality 162mm steel bicycle fork to ensure structural and historical consistency.
Technical Advantages & Specifications
Every lug and brazed joint on this frame demonstrates the high-quality craftsmanship characteristic of artisanal French workshops of the era. The 125 mm rear dropout spacing allows for vintage 5-speed or 6-speed hubs, providing wide compatibility with classic drivetrains. The photos are part of the description; please review them carefully to assess the cosmetic condition, patina, and original paintwork details.
Technical Specifications
- Brand: J. DUBOSCQ
- Size: 54
- Seat Tube (a): 54.5 cm (BB center to top of tube)
- Top Tube (b): 54.5 cm (center-to-center)
- Total Weight: 3032 g (including headset)
- Rear Spacing: 125 mm
- Threading: French Thread (FF)
- Headset: Stronglight Competition
To finalize your vintage cockpit build, check out our Vintage Aluminium Handlebar (420-24.6mm) which matches the elegant proportions of this mid-century frame perfectly.
FAQ
What is the threading on this J. DUBOSCQ frame?
This frame features classic French threading (FF) for both the bottom bracket and the headset.
What is the rear dropout spacing of the frame?
The rear spacing is 125 mm, which is ideal for mounting standard vintage 5-speed or 6-speed rear hubs.
Is the headset included with the frame?
Yes, the frame comes equipped with its period-correct vintage Stronglight Competition headset.
How are the frame dimensions measured?
The seat tube is 54.5 cm measured from the bottom bracket center to the top of the tube. The top tube is 54.5 cm measured center-to-center.
