Jay and Ted Chapelhow have renewed their contracts with Widnes until the end of the 2019 season.
The Runcorn-born pair, 21, are graduates of the Vikings Academy system and have established themselves as members of the first team in recent seasons.
Widnes’ boss Denis Betts said: “I’m very pleased that Ted and Jay have committed their futures to the Vikings.
“They are both outstanding products of our Academy, who love the club as local lads. They have great abilities, are excited for the future and are dedicated to getting better.
“To secure the long-term commitment of two of our key young players is a real boost to our plans for the future.”