Grogg would dominate this competition from 1971 to 1978, winning it every year, with Haller and future World Champion Emil Bollhalder as his main competitors.

[4] Grogg and Martinez, a team again in 1972, won the FIM-Cup that year, beating previous seasons champion Rikus Lubbers by a point.

[1] In 1975, the FIM-Cup became the European Championship and Grogg and Grabner came very close to winning this competition, too, coming second by two points to Dutch riders Ton van Heugten and Dick Steenbergen.

Hüsser would stay as his passenger until Grogg finished his career in 1984 but the pair was unable to repeat the success they had in the 1970s, competing only in selected races in the last two seasons.

[4] Grogg retired after the 1984 season while Hüsser, the passenger he had the most success with, would ride on and win two World Championships on the side of his twin brother Christoph.