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  1. #1
    Fireside Member
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    Mattress Size 337/ HARLEY pu

    I need to purchase a new mattress for our 337. Any suggestions as to where I might go to do this, also is the size a 60 x 75? On another note I would like to pull a trailer with a Harley on it behind my 337...ant thoughts.

    Phil Gaston
    Papa Phil
    2016 337
    F250
    Grayson Ga.

  2. #2
    Long Hauler Paul & Deb's Avatar
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    Dec 2014
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    There's nothing special about the mattress in your trailer. We got ours at a regular mattress store. They even put it in and took out the old (new) one.

    There are others doing what you describe. You need to have the hitch professional modified to carry the tongue weight if it's over 300 lbs. As is I think I would still have it beefed up rather than just the bolt on hitch. Be aware Lippert will void your frame warranty most likely if you have a subsequent frame claim and they find out you've been triple towing.
    Paul "Poppy" and Deb Cervone
    2022 Imagine XLS 22MLE
    2021 Imagine XLS 17MKE - SOLD ; 2015 Grand Design Reflection 337RLS - SOLD
    2016 GMC Denali 3500HD SRW Duramax/Allison CC 4x4; Tire Minder TPMS

  3. #3
    King Pin
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    Phil,

    On the mattress, we ordered our 337 with a standard queen mattress. We replaced the factory mattress with a residential queen and if fit perfectly.
    From what I understand, the hitch on the back of a 337 is only rated for 300#. I'd contact Grand Design directly regarding the warranty and any modifications to the frame in order to allow you to pull your motor cycle. I'm guessing here, but I don't think the 337 frame was designed to handle the kind of load you are considering.

    Jim

  4. #4
    Rolling Along
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    Is triple towing legal in GA? I thought that was mostly a West of the Mississippi thing.

    Dave (enroute to Tampa to pick up Barbara and the 337, then back north to host a campground in NC for a couple of months)

    Sent from my XT1058 using Tapatalk
    2015 Reflection 337RLS, #931, Built 6/14, Purchased New 1/15
    2015 Silverado 3500HD LTZ SRW CC, 8' Bed, 4WD, Z71, Duramax/Allison
    11,600 GVW, 3,739 Payload, 16.1 mpg for first 21,000 miles
    Reese Elite 18K Hitch with underbed rails
    Amateur Radio KQ3T (ex-WN8PXF, WA8PXF, N3CKQ)
    Felines: Butter (Abyssinian), Cinnamon (Burmese, R.I.P.), and Harry (Orange Tiger Cat, Rescued from Sutton Lake CG, WV)
    2018: Visitor Center Volunteer at Prince William Forest Park, Triangle VA, June thru October
    [SIGPIC][/SIGPIC]

  5. #5
    Site Sponsor Cate&Rob's Avatar
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    The "receiver" on the back is designed to carry up to 300 lbs . . . but that is not a tongue weight for a trailer.
    Note that there are no safety chain attachment points or a wiring harness connection.

    Rob
    Cate & Rob
    2015 Reflection 303RLS

  6. #6
    Seasoned Camper
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    Look at the Swivel Wheel. They are out of Katy Tx. The tongue weight isn't there and it's really not a trailer more like an extension. Not saying this is the answer for you, but this is what I am seriously considering to haul my Gold Wing.

  7. #7
    Commercial Member huntr70's Avatar
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    Mattress size is 60 X 80.
    Steve- Inventory Manager at Tom Schaeffer's RV, Shoemakersville, PA www.tomschaeffers.com
    [email protected]
    2011 RAM 3500 SRW Outdoorsman Edition 4X4, 6.7 Cummins--TWEAKED!
    2021 Reflection 310RLS

  8. #8
    Seasoned Camper Ivan S854's Avatar
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    Quote Originally Posted by huntr70 View Post
    Mattress size is 60 X 80.
    +1

    Standard residential queen size...

    First thing we did (besides running out the curb side slide for mattress moving "clearance") was to replace the stock mattress with a true pillow top...

    The residential mattresses are heavier so access to under bed storage is a little more difficult... But it's still manageable...
    2005 Chevrolet 2500HD D/A CC LB 4WD
    2016 Reflection 303RLS
    VIN: 573FR332XG3305974
    2007 Ural GearUp Arctic

  9. #9
    melkenlemons
    Guest
    Quote Originally Posted by Phil Gaston View Post
    I need to purchase a new mattress for our 337. Any suggestions as to where I might go to do this, also is the size a 60 x 75? On another note I would like to pull a trailer with a Harley on it behind my 337...ant thoughts.

    Phil Gaston
    Papa Phil
    2016 337
    F250
    Grayson Ga.
    The mattress is a standard queen 60 X 80

    Sent from my SM-G900V using Tapatalk

  10. #10
    Seasoned Camper yattr0's Avatar
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    Quote Originally Posted by Phil Gaston View Post
    I need to purchase a new mattress for our 337. Any suggestions as to where I might go to do this, also is the size a 60 x 75? On another note I would like to pull a trailer with a Harley on it behind my 337...ant thoughts.

    Phil,

    Did you come up with a solution for your motorcycle? Want to do the same for either a light dual sport or my R1200RTW.

    /ed
    Current;
    2017 Reflection 337LRS 5th with 2016 Silverado LTX 3500HD Duramax
    2019 Reflection 367BHS 5th permanent in RV park

    Past;
    30' TH TT Weekend Warrior, 36' TH 5th Weekend Warrior (both with Ford F250 diesel)
    26' TT Shadow Cruiser, 30' TT Cougar (both with Ram 1500 5.7L Hemi)

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