Skip to main content

LOT 31

1974 PSYCHO CYCLES CHOPPER BSA 650 cc engine – 1957/1958

Estimate: €9,000 - €12,000
Lot 31

1974 PSYCHO CYCLES CHOPPER BSA 650 cc engine – 1957/1958

The Zoute Sale|11 October 2026, 13:00 CEST|Knokke-Heist, Le Zoute

1974 PSYCHO CYCLES CHOPPER BSA 650 cc engine – 1957/1958

A true statement piece from the motorcycle culture of the 1970s, this chopper was built in 1974 by Psycho Cycles, a renowned Parisian workshop known for its custom motorcycle creations and expertise in preparing machines with a radical aesthetic.

Entirely custom-built, the chopper features a distinctive chassis, frame and wheels, together with an extended front end and elongated handlebars. Numerous chrome components further enhance its iconic Seventies silhouette.

The motorcycle is powered by a 650 cc BSA engine dating from 1957/1958, a model particularly appreciated by enthusiasts of classic British motorcycles.
It retains its original paintwork, characteristic of the custom aesthetic of the 1970s, which greatly contributes to its authenticity and distinctive character.

Approximately ten years ago, the motorcycle underwent a complete restoration, covering the chassis, engine and electrical system. The engine was entirely rebuilt by Olivier Glaisse, a BSA specialist, who also carried out the overall restoration of the chopper.

The documentation includes a collection of restoration invoices, as well as a disc containing photographs documenting the various stages of the restoration.
Since this comprehensive rebuild, the engine has covered only approximately 20 kilometres and therefore remains in its running-in period.

With its spectacular silhouette, distinctive history and unmistakably Seventies aesthetic, this motorcycle represents a highly desirable piece for collectors.
The motorcycle is sold with its French collector's registration document, issued in the owner's name.
A distinctive example of Parisian custom craftsmanship, at the crossroads of motorcycle collecting and the visual culture of the 1970s.

Additional information

Own a similar item?

Submit your item online for a free auction estimate.

How to sell

Looking for a similar item?

Our Cars specialists can help you find a similar item at an auction or via a private sale.

Find your local specialist

Specialist section

Auction Viewings

  • 7 October 2026, 10:00 - 20:00 CEST
  • 8 October 2026, 10:00 - 18:00 CEST
  • 9 October 2026, 10:00 - 20:00 CEST
  • 10 October 2026, 09:00 - 19:00 CEST
  • 11 October 2026, 09:00 - 18:00 CEST

Bid now on these items

1914 Sunbeam 3½hp
United Kingdom
Coming soon

1914 Sunbeam 3½hp

£8,000 - £12,000
1980 Ducati 900 MHR
United Kingdom
Coming soon

1980 Ducati 900 MHR

£7,000 - £9,000
1975 Ducati 750 GT
United Kingdom
Coming soon

1975 Ducati 750 GT

£8,000 - £10,000
Yamaha Banshee 350. Custom Made Le Mans Edition, 2004.
Denmark

Yamaha Banshee 350. Custom Made Le Mans Edition, 2004.

DKK80,000 - DKK100,000
The Automotor and Horseless Vehicle Journal; 35 bound Volumes 1 to 25 (1896-1920), and Volume 32 (1927)
United Kingdom

The Automotor and Horseless Vehicle Journal; 35 bound Volumes 1 to 25 (1896-1920), and Volume 32 (1927)

£7,000 - £8,000
A Singer 'Xtraordinary' lever-driven 'Safety bicycle', circa 1882,
United Kingdom

A Singer 'Xtraordinary' lever-driven 'Safety bicycle', circa 1882,

£8,000 - £12,000