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  1. #1
    Left The Driveway
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    May 2022
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    Lippert Trailair Roto-Flex Pin Box Bolts

    Hi all,

    I just dropped a B&W Companion 25k hitch into my 2020 F-450 with the OEM prep and set it at the max height to find that I only get about 5” of clearance on my bedrails and it’s still a tad nose down. Our Momentum 397TH has a Lippert Trailar Roto-flex pin box which has 5 bolt holes per side with 5 bolts installed (3 forward and 2 aft) on both sides. The two forward center bolts are shorter than all the other bolts, which makes me suspect they were a feel good addition made at some point. If I lower the box by one bolt, I’ll still be able to install 2 bolts per side aft, but will only be able to install 2 bolts per side forward. Is 4 bolts per side sufficient and safe?


    Sent from my iPhone using Tapatalk
    2017 Momentum 397TH
    2020 Ford F-450 Limited
    4 Battle Born BB10012 12V 100Ah (Parallel - 400Ah) - Victron Multiplus II 12/3000/125-50@X120V - Victron BMV-712 Battery Monitor - Starlink

  2. #2
    Left The Driveway
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    May 2022
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    Here’s a pic just for the visual. Click image for larger version. 

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    Sent from my iPhone using Tapatalk
    2017 Momentum 397TH
    2020 Ford F-450 Limited
    4 Battle Born BB10012 12V 100Ah (Parallel - 400Ah) - Victron Multiplus II 12/3000/125-50@X120V - Victron BMV-712 Battery Monitor - Starlink

  3. #3
    Site Sponsor JCR GD's Avatar
    Join Date
    Mar 2015
    Location
    Central Cal
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    I had to do the very same thing. I lowered it, installed the 4 bolts and then drilled a new hole through both the flange and pin box between the lowest two holes. No problem in 7+ years.
    Jim (& Sharon)
    2015 GD Momentum 385TH - SOLD
    For Sale - 2015 Ford F-350 DRW 4x4 Lariat w/ AirLift bags, Titan 65 gal. OEM replacement fuel tank.
    The toy:
    2017 RZR XP 1000 EPS SE

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