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Welcome to Haulinass.biz, Trailer Repair and Sales - Your Trusted Commercial Trailer Repair Speciali

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Expert Commercial Repair Services

The Haulin Ass Service Department isn’t just experienced in the car-hauling industry—we were built by it. After years of running and servicing both great and not-so-great trailers, we took everything we learned on the road and turned it into our own in-house shop dedicated to smarter repairs and game-changing upgrades.

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4807 & 5307 Conversions — Redefining What Car Haulers Can Do

Cottrell 4807 – Sprinter Mod.

Cottrell 5307 – Silver Streak Upgrade

Cottrell 5307 – Silver Streak Upgrade

Designed to bring increased versatility to the 48’ urban car hauler.  Sometimes the only thing on the board is a couple of Sprinters paying $800 just to move them across town.  

Cottrell 5307 – Silver Streak Upgrade

Cottrell 5307 – Silver Streak Upgrade

Cottrell 5307 – Silver Streak Upgrade

Don’t scrap or sell your Cottrell 5307 just because your bottom rails are worn out.  Bring it to Phoenix and have Haulinass.biz LLC breath new life in your favorite work horse.

Commercial Repair Specialists

Cottrell 5307 – Silver Streak Upgrade

Ditch those worn out bottom rails and up grade to the Haulinass Silver Streak bottom rails.  Gone are the thin steel 8” high box beams, and replace them with a galvanized 6” I beam.  No more trapped salt water eating your bottom rails from  the inside out.  The 6 inch rails give you 2 more inches of ground clearance, so getting stuck and getting pulled out by an $800 tow truck is a thing of the past.  


And it looks awesome.  We can add your name in amber lights on your rails so your customers can see who they are working with.  


Don’t scrap of sell your Cottrell 5307 just because your bottom rails are worn out.  Bring it to Phoenix and have Haulinass.biz LLC breath new life in your favorite work horse.

    Commercial Repair Specialists

    4807 Sprinter Mod

    Designed to bring increased versatility to the 48’ urban car hauler.  Sometimes the only thing on the board is a couple of Sprinters paying $800 just to move them across town.  The Sprinter mod will accommodate two sprinters and still put a full size pick up truck on the floating number one deck.  


    Nothing but pick up trucks on the board?  Put a crew cab pick up on the floating number one deck, then put two more behind it with three sedans below.  

    Got 6 mid size suv’s to move, grab em and go and come back with a pick up truck and three mid sized suv’s on the top, two more in the belly and a sedan on the wheel house.  


    We have copied the floating deck from the 5307 and the drop upper deck from the 5308 and added them to the city friendly 4807.  No need to upgrade to that long ass 53 footer to get a drop upper deck.  


    If you are working in the city and don’t want to get any longer, but need to be able to move Sprinters and tall pick up trucks without upgrading to the 5308 CX, the 4807 Sprinter mod is your answer.

    Cottrell 4807 – Sprinter Mod

    VIDEO 1

    Designed specifically to handle seven full-size SUVs

    VIDEO 2

    this trailer was completely re-engineered in-house based on real-world hauling experience

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