Bikies will face tougher penalties than the general population for some offences if they break the law

A new bill discussed in Parliament aims at making life a lot harder for outlaw motorcycle gangs.

Bikies will face tougher penalties than the general population for some offences if they break the law under legislation the State Government is keen to introduce.

Attorney General Christian Porter hopes to shatter the core of outlaw bikie gangs with the new law, which would make WA's organised crime laws the toughest in the country.

"For a range of prescribed offences which may be committed by members of organised crime, courts would be required to impose at least two years imprisonment - or for more serious offences, at least 75 per cent of the statutory maximum penalty for the offence," he said.