Tow Dollies
Tow dollies make it easier to move disabled or parked vehicles. Built for strength and maneuverability, they support cars and light trucks during transport. Compact designs allow for easy storage when not in use. Tow dollies are valuable for towing professionals, repair shops, and fleets.
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Collins Short Dolly Mounts
Collins Locking Dolly Axle Mounts
Collins G7 Hi-Speed Dolly HERO T12 Aluminum Cross Rails, Hubs, Wheels & Pry Bar
Collins Locking Dolly Combination Mount
Collins Hi-Speed G7X Dollies with T12 Hybrid Cross Rails
Originally designed for Canada’s harsh off-road winters, the Collins G7X Super Dolly is built for extreme conditions and extended use. While the Collins G7 is the ultimate in professional, light-duty dolly towing, the G7X goes further with heavy-duty framework, tackling tough harsh road conditions, long-distance hauls and overall demanding wrecker jobs. See how it stacks up below.
Product Highlights
Stronger, Heavier-Duty Build
Engineered with a significantly thicker steel construction, the G7X is built to absorb punishing roadside abuse, deep pothole impacts and rough ditch extractions. The beefy framework outlasts the competition, saving you money on replacements and minimizing fleet downtime.
Solid Steel Hubs and High-Capacity Steel Wheels
Equipped with a strong wheel assembly, the G7X features heavy-duty steel hubs and high-capacity steel wheels. This means zero flexing, warping or cracking when loading up heavy vehicles, giving you absolute peace of mind during high-stress recoveries.
Steel Cross Rail Insert with True-Positive Camber
Featuring Collins’ patented “True Positive Camber” design, the included T12 Hybrid Cross Rails combine adjustable aluminum outer tubes with an ultra-strong steel inner rail. This allows you to safely extend your span up to a massive 104" to accommodate wide vehicles, while ensuring the rails stay perfectly arched and never bow or sag under full load.
5,000-lb. Towing Capacity
Upgrade your fleet’s capabilities to handle heavy-duty trucks, large SUVs and commercial cargo vans with precision. These premium, high-traction tires support an industry-leading 5,000-lb. capacity, providing the biting grip needed to pull heavy loads out of muddy ditches or snowy embankments.
75 mph. Speed Rating
Never be a rolling roadblock on fast-moving highways. Fitted with heavy-duty tires carrying an official "M" speed marking, the G7X allows you to safely maintain expressway speeds up to 75 MPH over long distances, drastically reducing your transit times.
Built for Extreme Winters
Purpose-built to withstand harsh winter weather, the G7X delivers relentless structural resilience against freezing temperatures and corrosive road salt. When standard aluminum dollies slide or freeze up, this rugged system provides the heavy-duty traction and freezing-weather reliability required to get the job done safely.
Specifications
- Dolly Tire Size: 5.00x8 E Rated
- Dolly Cross Rails: T12 Hybrid
- Dolly Wheel Hubs: Steel
- Dolly Wheels: Steel
- Dolly Weight: 228 lbs.
- Dolly Capacity: 5,000 lbs.
- Dolly Speed Rating: 75 MPH
Package includes
- Dolly Tire Size: 5.00x8 E Rated
- Dolly Cross Rails: T12 Hybrid
- Dolly Wheel Hubs: Steel
- Dolly Wheels: Steel
- Dolly Weight: 228 lbs.
- Dolly Capacity: 5,000 lbs.
- Dolly Speed Rating: 75 MPH
Accessories
Collins Self Loading Dolly Mount (Pair)
The Self-Loading Dolly Mounts from Collins are ideal for trucks with a taller bed height. These mounts drop down over the body side about 11" were it is then loaded, and then they swing up and back to the storage position. This shock-assist action reduces driver fatigue and back injuries from lifting the side frames over the side of the truck bed. Buy now!
FAQ
Q: What makes the Collins G7X different from the standard G7 Dolly?
A: The G7X “Super Dolly” is specifically engineered for extreme, heavy-duty and off-road rural recovery conditions. Unlike the standard G7, the G7X features thicker steel construction, heavy-duty steel hubs, high-capacity steel wheels and steel cross-rail inserts to survive harsh winter environments and abusive towing conditions.
Q: What is the maximum weight capacity of the Collins G7X Dollies?
A: The Collins G7X features an industry-leading load capacity of up to 5,000 lbs. per pair, supported by aggressive, high-traction Load Range E (5.00 x 8) tires.
Q: What is the safe speed rating for towing with the Collins G7X Super Dolly?
A: The 5.00 x 8 tires on the G7X carry a speed marking of "M", which represents a safe towing speed rating of up to 75 MPH on expressways and highways.
Q: What is the recommended tire pressure (PSI) for the G7X Dolly?
A: To ensure safe operations, maximum load capacity and proper tire wear, Collins recommends maintaining a tire pressure of 120–125 PSI.
Q: Where can I find replacement parts like spindles or rail ends for the G7X?
A: Zip’s carries a full inventory of official Collins Manufacturing replacement components, including right/left spindle assemblies, replacement rail ends, tie-down straps, and hardware specifically engineered to fit the HSD-G7X model.
Q: How do I know if the heavy-duty Collins G7X is the right model for my fleet?
A: Choosing the right dolly depends heavily on the average curb weight of the vehicles you tow, the terrain you operate in, and how often the equipment is deployed. While standard, lighter-weight dollies are great for quick, short-distance highway runs with light passenger cars, the heavier-duty build of the G7X is designed specifically for extreme weather, high-mileage expressway trips and rugged off-road recoveries. To break down all the key differences, check out our comprehensive Tow Dolly Buying Guide on the Zip’s blog to make sure you make the right investment for your truck.
Collins Hi-Speed Dolly Tie Down Straps
Collins Self Loading Dolly Mount (Pair)
Note: Special Handling Fees Apply for Specific Items
The Self Loading Dolly Mounts from Collins is ideal for trucks with a higher bed height. These mounts drop down over the body side about 11" were it is then loaded and then they swing up and back to the storage position. Reduces driver fatigue and back injuries from lifting the side frames over the side of the truck bed. Please select from the dropdown the tire size of your dollies you will use with this mount.
- No more climbing up on the truck. The dollies come down to you
- Chances reduced for any back injuries and accidents, less chance for liability claims, more time on job
- Encourages dolly tows due to ease of operation; generates more revenue!
- Self Loading Dolly Mounts assists in lifting the dollies on and off the truck - the gas shock does the work!
- No more scratching and denting truck's paint, or hand rails or dollies hub caps
- Self Loading Dolly Mounts fold back into place while dollying car
Replacement Parts
- DM-BSS - Collins Ball Stud Self Loading Dolly Mount
- DM-FLS - Collins Front Latch Assembly
- DM-CLS - Collins Dollies Cup Latch for DM-SL Dolly Mount
- DM-GSS - Collins Gas Strut 20" Self Load Dolly Mount
- DM-BH - Collins Dollies Dolly Mount Hinge Bolt
- DM-LS - Collins Dollies Latch Spring
- DM-RL - Collins Dollies Rear Latch Assembly
- DM-RL-G2 - Collins Dollies Rear Latch Assembly
- DM-SLTC - Collins Dollies Dolly Tire Cradle Set of 4
- DM-TCU - Collins Dollies Dolly Tire Cradle Set
- DM-LP - Collins Dollies Lynch Pin (10 Pack)
Collins Dolly Tow Cradles
Collins G7 Hi-Speed Dolly PRO T10 Aluminum Cross Rails, Hubs, Wheels & Pry Bar
Collins Dolly Bunks
Collins Parallel Motion Dolly Mount (Pair)
Collins Dolly Tow Cradles Ball Joint
Collins Dollies Universal Dolly Mount Tire Cradle Set
- Sold as a Set of 2
- Can Be Used with 5.70 or 4.80 Tires
Collins Hi-Speed Dolly PRO Dolly Set Zinc Plated w/ Aluminum Axles and Aluminum Diamond Cut Wheels
Collins Hi-Speed Dolly REPO Dolly Set Zinc Plated w/ Aluminum Axles and Steel 5 Lug Wheels 4.80 x 8
Collins Hi-Speed Dolly HERO Zinc Plated Aluminum Cross Rails & Aluminum Diamond Cut Wheel
Collins Hi-Speed Dolly PRO Dolly Set Zinc Plated w/ Aluminum Axles and Aluminum Diamond Cut Wheels 4.80 x 8
Tow Dollies: The Smart Choice for Tow Operators & Recovery Professionals
When you're on the move, speed, versatility, and durability matter. Tow dollies deliver all three—packaged as compact, efficient tools engineered to safely relocate front-wheel-drive cars without needing a full trailer. Whether you're operating a wrecker, car carrier, or rollback, a tow dolly minimizes setup time and maximizes job efficiency.
Why Choose a Tow Dolly?
Professionals working demanding shift schedules rely on instant loading, minimal storage footprint, and rugged build quality. Dollies save space in tight lots, reduce fuel consumption compared to full trailers, and deliver unmatched nimbleness for recovery runs. They’re especially essential for operators dealing with frequent auto moves across short distances where a bulky trailer would slow things down.
Top Brands & Models You Can Trust
- In The Ditch X-Series & SLX – Lightweight, foldable designs built with strong aluminum frames. These models offer quick deployment and smart storage for busy towers. (In The Ditch X-Series, SLX Series)
- Collins Hi-Speed Dolly – Features a tough, zinc-plated steel finish, ideal for operators who want longevity under heavy use. Designed to withstand the toughest environments. (Collins Hi-Speed Dolly)
- Collins G7 Dolly – An aluminum variant offering excellent strength-to-weight ratio for fast deployment and easier storage. (Collins G7 Dolly)
Shop with confidence from these trusted names when looking for a tow dolly for sale that performs under pressure.
What to Look for in a Tow Dolly
|
Feature |
Why It Matters |
|
Load Capacity |
Ensure your dolly matches or exceeds the curb weight of the vehicle you're towing (3,000–5,000 lb is common). |
|
Ease of Storage |
Folding or stackable models help you maximize truck bed or garage space. |
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Material & Finish |
Aluminum options (like G7) are lightweight and corrosion-resistant; zinc-plated steel (Hi-Speed) emphasizes toughness. |
|
Parts Availability |
Having access to axles, straps, hubs, and tires helps avoid downtime during peak jobs. |
Accessories & Parts Are Ready for You
Don't get stuck mid-job— keep a full inventory of replacement parts like axles, hubs, straps, bearings, and tire assemblies on hand. These components ensure your In The Ditch or Collins dollies stay road-ready without delay.
Still Unsure? Read the Guide
Not sure which model suits your workload? Check out our blog: Make an Informed Purchase on Your Next Tow Dolly. It walks you step-by-step through capacity selection, material comparison, and deployment tips for wreckers, car carriers, and rollback operators.
FAQ: Tow Dollies
What is the typical capacity of a tow dolly?
Most professional models carry between 3,000 and 5,000+ lbs. Always confirm your vehicle's curb weight before towing.
Are these tow dollies suitable for RVs?
No—these models are for front-wheel-drive cars and light trucks only. They are not designed for RV towing.
How do I maintain my tow dolly?
Check axle bearings, tires, straps, and hardware regularly. Use original replacement parts for best performance.
Why choose aluminum vs. zinc-plated options?
Aluminum (e.g., Collins G7) is lighter and corrosion-resistant—great for storage. Zinc-plated steel (e.g., Collins Hi-Speed) offers extreme durability in heavy-use scenarios.
