During 1992, Kremer Racin had abandoned the World Sportscar Championship due to heavy costs brought on by the new engine formula which had gone into effect in 1991.
The racing company therefore turned to the smaller Interserie championship, which continued to allow Kremer's 962CK6s to compete alongside a wide variety of machinery.
Kremer Racing, as well as other teams in the series, chose to therefore turn their coupés into open-cockpit cars in an attempt to lower weight and increase speed.
Following the success of the K7s in Interserie use, Kremer saw the opportunity to adapt their design to the new open-cockpit formulas that were allowed in the IMSA GT Championship and at the 24 Hours of Le Mans.
The rules also necessitated the addition of a rollbar to the top of the engine cover, to better protect a driver's head in the event of a rollover.
Directed by Project 100 Communications, bringing backing by Gulf Oil sponsorship, as well as other secondary sponsors, the K8 Spyder would be the only open-cockpit car competing in the LMP1/C90 class.
After Le Mans, Kremer Racing chose to prove the endurance capabilities of the K8 again by entering the car into the IMSA GT Championship debut event of the 1995 season, the 24 Hours of Daytona.
Although the car did not qualify well, the driving team of Giovanni Lavaggi, Jürgen Lässig, Marco Werner, and Christophe Bouchut were eventually able to take the race victory by five laps over the nearest competitor.
Now in a field full of open-cockpit prototypes, the K8s faced stiffer competition from the likes of Courage and the new custom-built Ferrari 333 SP.
After Le Mans, Kremer chose to finish the year in Interserie once again, using a CK7 in two of the final three rounds, earning themselves a sole victory.
A lone K8 would also again be entered at Le Mans, where the evolved car was able to improve on its previous performances by finishing in 12th, yet second in the LMP1 class.
A second K8 was sold to the privateer Dutch team BPR Competition who had success early in the season, but eventually withdrew from the series.