The suspension rules England World Cup candidate Tuilagi out of Tigers' Premiership final appointment with Saracens on May 28.
He will also miss England Saxons' entire Churchill Cup campaign next month, which would have provided a shop window for him prior to England's World Cup warm-up Tests in August.
The ban starts on Thursday and expires on June 23. Tuilagi admitted the charge.
Tuilagi, 20 on Wednesday, appeared before a three-man Rugby Football Union disciplinary panel in central London after being cited for punching England star Ashton. Both players were sin-binned by referee Wayne Barnes.
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!
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
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.