Cousin Trestec - Rope Manufacturer for Industry and Sports


Cousin Trestec

Rope manufacturer, always more innovative

Located in the North of France, Cousin Trestec manufactures innovative ropes and braids. With 170 years of experience, Cousin Trestec is a key player in the industry and leisure markets.

Innovative rope manufacturer, for high performances

Cousin Trestec is a rope manufacturer specialized in fibres transformation by spinning, cabling, braiding and coating since 1848. Cousin Trestec is the reference on the rope market, with customers in various sectors, such as leisure and sport (yachting, climbing, caving, trekking, mountaineering, paragliding, kitesurfing...), safety (work at height, rescue, handling, events...), industrial (offshore, hoisting, automotive...) and military. With the benefit of the expertise from the group and its sister companies (Cousin Biotech, Cousin Composites, Major Sport – Tecnifibre), Cousin Trestec offers solutions matching your needs and brings you all their know-how to manufacture quality and innovative products. On top of our rigour and expectations for product design, we place your satisfaction in first place.

170 years of know-how and French quality

Cousin Trestec uses the best available raw materials to increase comfort, safety and performance: polyamide and high tenacity polyester, Technora®, Dyneema®, Twaron®, HMPE, Spectra®, Vectran® or the recent PBO®. Cousin Trestec has not only an unmatched knowledge of the materials, but also the ability to combine all the technologies and to control perfectly the thermic treatments (stretch, shrinkage, stabilization, waterproofing) and coatings. Cousin Trestec also designs your tailor-made products to your own specifications. Working with traditional know-how while mastering the high-tech fibres makes the Cousin Trestec hallmark.



Foundation of COUSIN Frères, specialising in spinning and braiding line, cotton and hemp yarns.

Late XIXth

Manufacturing of sewing threads and strings


1st rope-maker to use synthetic fibres.


1st products ranges dedicated to yachting and climbing.


Market Leader for paragliders and parachutes lines.


Market Leader for safety and access ropes.


CE marking.


COUSIN Frères creates a group with several subsidiaries for each activity - COUSIN Trestec, COUSIN Composites (rods and optic fibres) , COUSIN Biotech (medical implants), COUSIN Office (corporate general services).


Launch of the first range of lines for kitesurfing.


ISO 9001 Certification version 2000.


Dalle & Associés takes over COUSIN Trestec, COUSIN Composite and Major Sport.


Cousin Trestec develops Constrictor®, a new textile rope clutch which sets new standards in the sailing sector.


Cousin Trestec partners with "Souffle du Nord" with Thomas Ruyant and Adrien Hardy who made the 4th place in the IMOCA class at transat Jacques Vabre.

Cousin Trestec

Hot figures

working 30,000

km of ropes made each year

working 60,000

plaits necessary to the manufacture

working 170

years of experience

working 60

countries all over the world

working 80

mm diameter maximum



October 2021 : Meet us at the A+A trade fair in Dusseldorf

October 2021 : Meet us at the A+A trade fair in Dusseldorf

From 26th to 29th of October 2021, meet us at the A + A show in Düsseldorf, Germany. On stand 7AC14, located in Hall 7A you are welcome to check out our range of safety ropes. A + A is the world’s largest international trade forum for safety, security and health at work.

March 2020 : Our sales department stays reachable

March 2020 : Our sales department stays reachable

Due to the Coronavirus context, Cousin Group complies with government measures to protect the health of its employees, customers and suppliers. This unprecedented situation brings many disturbances in the organization of our production processes, order intake, manufacturing deadlines. Following your many questions, please note that our sales department can be contacted by email and telephone […]

March 2020 : Exceptional closure

March 2020 : Exceptional closure

As you may have been informed, we are now in a situation of quarantine in France, meaning that we have to shut down our factory and stop all operations starting from today and for an unknown period. Starting from today, March 17th it will therefore be impossible for us either delivering goods to you or taking your orders […]

January 2020 : New range of Sport ropes

January 2020 : New range of Sport ropes

We are very excited to introduce to you our new range of ropes dedicated to sports & verticality: outdoor climbing, indoor climbing, mountaineering, hiking, canyoning and caving. In our new catalogue, you will discover new ropes such as Cerro Torre 7.5, Supercouloir 8.0, Dura Dura 9.5, El Capitan 10, and hiking and glacier rope Dibona […]