21Actual

16 Sierra with the OEM GMC branded soft tri fold tonneau cover. Backrack website doesn't list the OE cover as an option for the bed rail adapter. Wondering if anyone has successfully added a backrack with the OE tonneau cover, what what bracket was used. The OE cover appears to be very similar to the Extang Trifecta 2.0, which backrack lists as compatible with the wide top rail adapter. P/N BRK50120.