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 47000

km of ropes made each year

working 60000

plaits necessary to the manufacture

working 170

years of experience

working 60

countries all over the world

working 80

mm diameter maximum



MARCH 2018: Technical partner of the UIAA 2018 Ice Climbing World Cup final stage and European Championship in Kirov, Russia

MARCH 2018: Technical partner of the UIAA 2018 Ice Climbing World Cup final stage and European Championship in Kirov, Russia

Cousin Trestec will be the technical partner of the UIAA 2018 Ice Climbing World Cup final stage and European Championship, held in Kirov, Russia on March 2nd-4th. Cousin Trestec is happy to take part in the UIAA 2018 Ice Climbing World Cup and European championship in Kirov, Russia in partnership with ICE ROCK and Vertical […]

JANUARY 2018: We were at ISPO Munich

JANUARY 2018: We were at ISPO Munich

From 28th to 31st of January 2018, Cousin Trestec was exhibiting at ISPO Munich (Germany). On our stand A3-536, we displayed our range of climbing, mountaineering, caving and canyoning ropes. Each year, ISPO brings together more than 2,700 exhibitors and approximately 85,000 visitors from 120 countries.



From 15 to 17 November, Cousin Trestec was exhibiting at METSTRADE in Amsterdam, Europe’s largest trade fair for sailing activities. You met us at our stand 01.717, we were happy to assist you with infos on our ropes ranges for Dinghies, Cruise, Competition and Mooring-Anchoring.

SEPTEMBER 2017: We were at Coupe Icare

SEPTEMBER 2017: We were at Coupe Icare

From 21 to 24 September 2017, Cousin Trestec was exhibiting at the Icare Cup (Icare Expo) in St Hilaire du Touvet – Lumbin in Isère. On stand B17-19, Cousin Trestec displayed his range of paragliding ropes. The Icare Expo exhibition is the must-see for aerial sports and it is more than 5,000 m² of exhibition […]