Campagnolo is an Italian manufacturer of high-end bicycle components with headquarters in Vicenza, Italy.

The components are organised as groupsets (gruppi), and are a near-complete collection of a bicycle's mechanical parts.

[3] At the end of the 1950s, Campagnolo started to manufacture magnesium parts such as wheels for sports cars like Alfa Romeo, Ferrari, Lamborghini, and Maserati and built chassis for NASA satellites in 1969.

[5] Campagnolo worked with the manufacturer Colnago and racer Eddy Merckx and produced lightweight parts for the bike he used to beat the world hour record in 1972.

[6] An unsuccessful foray into mountain biking, the overbuilt and heavy Euclid, Centaur and Olympus groupsets contributed to the company's decline during those years.

(off-road) and Icarus MTB groupsets made it to the market, Campagnolo's reputation was firmly cemented as a road bike brand.

Despite its struggles, Campagnolo introduced its ErgoPower combined shifter/brake levers and renewed its focus on high-end road cycling components.

The late 1990s and early 2000s saw Campagnolo's increased use of carbon fibre and titanium parts in groupsets and the development of wheelsets.

Other innovations included a Hirth-joint engineered Ultra-Torque external-bearing crankset and G3 spoke lacing for racing wheels.

Eddy Merckx uses it for his first four Tour de France victories 1973 The Super Record Road and Track groups are introduced.

(for disc and rim brake) Bora WTO (Wind Tunnel Optimized) wheels are introduced.