Metron 4D Flat MAS J-Bend 420mm

Marsoni

M251S

$9099.50

Get it in 3 business days with 1 day shipping. Friday, May 29

Metron 4D Flat MAS J-Bend 420mmThe Metron 4D Flat combines the superb ergonomics and aerodynamics of the Metron 4D, with a lower hand position and an innovative Modular Aero System (MAS) direct mount clip on system for additional versatility. Reinforced carbon fiber construction gives a great strength to weight ratio. The 4D features internal cable routing, with guides that accommodate wiring for electronic shifting.

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decent product. not as thick as typical sound deadening but definitely cheaper. and for my application, i didnt need a name brand thicker material. i am putting it on our heat and ac vent and intake pipes during our remodel. sound travels from room to room in our old house through these vents and pipes so a little sound deadening goes a long way

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Reviewed in the United States on June 2, 2026