The Crusaders have extended their winning streak over the Blues to 11, scoring a 25-8 win over the Auckland-based side at Eden Park.
14-straight points from the red and blacks propelled them to their second win of the season and handed the Blues their second loss - both coming at home.
Blues captain Patrick Tuipulotu opened the scoring after a crossing over off the back of a storming run from Stephen Perofeta.
But the three-time defending champions hit back with a try of their own, Jack Goodhue producing a glorious offload to set up George Bridge to score in the corner.
Two David Havili penalties separated the sides at half-time, the visitors leading 11-5.
The Crusaders found their straps in the second half, running in two unanswered tries.
Richie Mo'unga produced a skilful effort to slice through the defence and score - he was involved in the final try too, gathering a Goodhue chip before handing it back to the second-five who scored.
The Crusaders host the Highlanders next Friday, while the Blues face the Bulls in Pretoria
Crusaders 25 (George Bridge, Jack Goodhue, Richie Mo'unga tries David Havili 2 cons 2 pens) Blues 8 (Patrick Tuipulotu try Harry Plummer pen)
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