Its biggest successes came under the unpopular Klub Sportowy Aluminium Konin name in the 1997–98 season, when they finished runners-up in the second division and very controversially lost the Polish Cup final that year to Amica Wronki.

Even reaching the Polish Cup final did little to please fans, as despite Aluminium being by far the better team, Amica Wronki won in controversial circumstances, with many officiating mistakes made by the referee Marek Kowalczyk.

[3] Despite the PZPN match observer Alojzy Jarguz inexplicably giving the referee a high note for his performance, Kowalczyk was later given a 3-month ban.

The 1998 cup final however was never investigated, with trophy still belonging to the now defunct Amica Wronki team, and remains a sore point for Górnik fans to this day.

[4][5] The following 1998–99 season was greeted with financial troubles, after the privatisation of the aluminium foundry meant that it was taken over by the company "Impexmetal SA", who withdrew their support for the club.

It then turned out that in the second half of the season plans to relocate the team to Bydgoszcz were put in place, but still to play under the name KP Konin.

In the end, the relocation never came to fruition, but the team which only amassed 8 points the entire season, was disbanded, with the club management and the chairman Piotr Nowak, who played professional football in the USA on a daily basis at the time, widely held responsible.

Following their relegation, many of the Aluminium players were involved in the large corruption scandal in Polish football which shook the country that season, which had a major impact on the club sponsors who all withdrew.

In the 2006–07 season, the restructuring of the league by the Polish FA meant that despite winning the fourth division, the club would need a play-off against GKS Tychy to gain promotion, which they lost.

[13] Fans of Ostrovia Ostrów Wielkopolski are also warmly welcomed, as like Górnik, also sympathise with Lech and have a strong rivalry with KKS Kalisz.