The Welsh side led 20-11 at the break thanks to tries from Dafydd Hewitt and Chris Czekaj and 10 points from Ceri Sweeney's boot.
Wing Sinoti Sinoti had crossed early on for the hosts, with Naas Olivier kicking two penalties, and they added second-half scores from Nick Williams (two) and Gilberto Pavan to earn a bonus point of their own.
But the Blues made the win safe with Czekaj's second try and a Xavier Rush score securing the five points, Sweeney adding the conversions and a penalty for a personal 17-point haul.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The Barbarians are one of the top invitational rugby sides with a long history and classic rugby jersey.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Lions get ready for their matches with this green training jersey. It's what the players wear. Get in the Gear!
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Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
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The Lions are ready to get their Australia tour underway. They arrive in Perth on Monday.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.