Queensland police's anti-bikie squad has seized 7500 ecstasy pills believed to be bound for this weekend's Future Music Festival.

Taskforce Maxima detectives seized the drugs and $50,000 in cash in a series of raids across Brisbane and on Russell Island on Friday.

Police were confident the drug haul was all headed for Saturday's Future Music Festival at Doomben Racecourse. Credit:Iolande Skinner

They said the drugs had a street value of about half a million dollars and their distribution was linked to the Bandidos bikie gang.

The raids, executed as part of the six month Operation Mike Order, came nearly three weeks after police raided a so-called drug production safe house in Bulimba, where they seized 3000 pills, 680 grams of cocaine, ice and $16,000 in cash.