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Replacement T-Slot Rails For RetraxPRO MX Hard Tonneau Cover # 80481  

Updated 08/13/2026 | Published 10/22/2023



Question:

Will this work with the RetraxPRO MX Tonneau Cover Part #: RTX-80481?

0

Expert Reply:

No, the correct replacement t-slot rails for your RetraxPRO MX Hard Tonneau Cover # RTX77FR can be found with part # RTX39FR.

expert reply by:
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Kevin C
Agustin profile picture

Agustin

8/13/2026

Do 80481RetraxPro MX Rails Fits On A RetraxPro XR T 80481 Bed Cover ! For Sierra 1500 2026 short Bed 5.8"

Lazer S. profile picture
Etrailer Expert

Lazer S.

8/13/2026

@Agustin They sure do! The Replacement Side Rails for Retrax XR Series Hard Tonneau Covers - T-slot Style # RTX39FR Kevin mentioned above will replace the rails on an MX to turn them into what would have come with the XR, but the rails from the MX can also be used on the XR. They will basically turn the XR into an MX, for the lack of a better way to put it.
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