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This authentic FRANCESCO MOSER steel chassis stands as a testament to classic Italian design paired with legendary British metallurgical expertise. Weighing in at 2820g including its matching fork, this frame is built from high-performance Reynolds 531 steel, renowned for its optimal strength-to-weight ratio and compliant ride quality. It represents an exceptional foundation for period-correct restorations or vintage racing builds.
With its seat tube measuring 54 cm (measured from the center of the bottom bracket to the top of the tube) and a 55 cm top tube (measured center-to-center), this chassis provides classic racing dimensions. Unusually for Italian marques of certain eras, it is engineered with French thread standards on both the bottom bracket shell and the fork steerer tube. To assist in your rebuild, you can pair this frameset with our 153mm Steel Bicycle Fork 25x100 as an alternative front-end solution, or explore another classic design such as this vintage bicycle frame for comparison.
As a pre-owned vintage item, the structural integrity of the steel is solid with no major defects like structural cracks or bends. Superficial wear from storage and use, including minor paint chips and decals aging, are visible. Please note that the high-resolution photographs supplied on this page form an integral part of the description; we advise inspecting them closely to appreciate the exact cosmetic patina before purchasing.
This frame features French threading, with a 35x100 bottom bracket standard and a 25x100 fork steerer thread. Ensure you use compatible French-threaded headsets and bottom brackets during your restoration.
No. The frame and fork have been structurally inspected and are free of major defects, alignment issues, or cracks. Only minor cosmetic blemishes and patina from age are present.
The rear dropout spacing is 128.6 mm, which is ideal for vintage 5-speed, 6-speed, or narrow 7-speed rear wheels and freewheel setups.
The seat tube is 54 cm, measured from the center of the bottom bracket to the top of the seat tube. The top tube is 55 cm, measured center-to-center.
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