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About Two Brothers Racing S1R 3K Full System

Two Brothers Racing S1R 3K Full System

  • Aerospace grade high-temp carbon fiber
  • Magnesium teflon light-weight end-cap
  • Stamped, durable spring-fit inlet
  • Aluminum CNC machined outlet
  • Rubber-lined aggressive style mount
  • Spiral-wound perforated core
  • Accepts sound reduction tips.

Warning:  California Proposition 65

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