BRK6575GRC Charcoal Matrix Cloth Backrest Extension Kit for MSG65 & MSG75 SeatsOne New Aftermarket Replacement Charcoal Matrix Cloth Backrest Extension Kit for Grammer MSG65 and MSG75 Seats This charcoal matrix cloth backrest extension kit is a direct replacement accessory for Grammer MSG65 and MSG75 suspension seats. The backrest extension bolts onto the upper portion of the seat back to add height and lumbar coverage, helping operators of varying builds maintain proper support during long hours of operation on tractors,