Will Roadmaster Guardian Rock Guard Fit A Blue Ox Base Plate And Tow Bar?

Updated 02/23/2026 | Published 02/19/2026

Products Featured in This Question

Blue Ox KarGard Protective Shield for Towed Vehicles

(121)

$389.31

Roadmaster Guardian Rock Guard for Towed Vehicles

(57)

$615.00

Question:

Will the Roadmaster Tow Defender fit on a Blue OX tow bar and Blue OX base plate?

asked by: Matt

Expert Reply:

Hey Matt, thanks for reaching out. The Roadmaster Guardian Rock Guard # RM-4000 only works with the Roadmaster crossbar-style base plates with quick connects. The Blue Ox base plates use a different connection, so the rock guard would not be compatible.

That said, we do have a very similar rock guard from Blue Ox part # BX8870 that will be compatible with the Blue Ox base plate and tow bar setup. The only Blue Ox tow bar it won't work with is the Acclaim.

Which Blue Ox tow bar do you have?

expert reply by: Jesse M