The CIK have announced that Robert Kubica will not be competing in this weekend’s KZ1 World Cup for personal reasons. Apparently Kubica was having some trouble in testing getting enough speed from his kart/motor package in testing, but there has been no official statement from Kubica sighting the reasons why he is not participating this weekend.

Jaime Alguersuari will be still be competing this weekend.

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Tags: kart, karting, kz1, robert kubica, world cup