The pair follow in the footsteps of Damien Blanch, who recently joined John Kear's side from the Vikings.

Second-rower Wilkes, 27, has also had spells with Whitehaven and Wigan, who he left to join Widnes.

Irish international Grix, , 23, who can play at full-back or stand-off, comes to Belle Vue after playing with Leigh, Halifax and French club Limoux.

"I progressed massively at Widnes. Right from being at Halifax I've enjoyed being at each club and have got better over the years so I'm glad to have got a Super League deal," said Grix.

Wilkes, Grix and Blanch join fellow new recruits Brad Drew, Paul Reilly, Danny Brough, Tony Martin at the Yorkshire club.