The Bryan Brothers have tuned up a new string pact.

Olympic gold medalists Mike Bryan and Bob Bryan have sign an endorsement deal with Solinco strings.

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Financial terms of the deal were not disclosed.

The 16-time Grand Slam champions have played with Solinco’s Hyper-G co-polyster string for the past two years.

“Bob and I are thrilled to officially be a part of the SOLINCO family,” said Mike Bryan. “We have been using SOLINCO for the past two years and we love the feel and performance of their strings. Players are very sensitive about theirs strings and we chose SOLINCO out of every other brand as we believe it is the best product out there.”

The Bryan brothers will have SOLINCO’s “O” logo on their strings to represent the brand.