Kolvoii 3500lbs Boat Trailer Winch with 33FT Strap, 4:1/8:1 Gear Ratio 2-Way Ratchet Heavy Duty Hand Winch, Comfortable Handle for Boat, Trailer, Marine, and Jet Ski - Orange
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Availability:
In Stock.
Arrives
Monday, Dec 8
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Size: 3500 lbs
Color: Orange
Features
- 3500 POUND CAPACITY: This heavy-duty steel hand winch delivers 3500 lbs capacity with a 33 ft (10 m) 2 in (5 cm) polyester strap. Dual-speed 4:1 & 8:1 gear ratios balance speed and strength, reducing physical effort by 75%
- TWO-WAY RATCHET: The two-way ratchet enables smooth forward/backward operation for easy loading and unloading. The winch offers two speeds: switch between high-speed mode for light loads and low-speed mode for heavier objects with ease.
- DURABLE GEAR & POLYESTER STRAP: Made with 8 mm thickened high-carbon steel gears and a corrosion-resistant galvanized finish, this winch withstands harsh marine environments. The integrated polyester strap resists wear and withstands extreme pressure
- COMFORTABLE HANDLE: The 10.2-inch ergonomic, anti-slip handle features a textured grip to minimize hand fatigue during extended use. Its removable design enhances portability and storage efficiency
- EFFORTLESS INSTALLATION: The reinforced base features standard mounting holes and includes three mounting screws. This allows flexible bolt alignment, ensuring quick and secure installation on trailers, docks, and other setups. Base dimensions: 7.5 in x 3.9 in
- WIDE APPLICATIONS: Equipped with heavy-duty hooks, this winch is perfect for boat loading, vehicle recovery, towing, material handling, and more. Its compact yet powerful design ensures reliable performance in diverse tasks
Manufacturer: Kolvoii
Brand: Kolvoii
Model: US-K120
Item Weight: 11.84 pounds
Product Dimensions: 10 x 7 x 6 inches
Item model number: US-K120
Date First Available: July 24, 2025
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If you place your order now, the estimated arrival date for this product is:
Monday, Dec 8
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View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 3500 lbs
Color: Orange
My husband bought this to replace on our trailer for our 87 Checkmate boat, that has a Chevy 454 in it. So an easy to use winch and rugged too was a MUST! Absolutely recommend!
Reviewed in the United States on October 23, 2025 by MEGAN VECCHIONE MEGAN VECCHIONE
Size: 3500 lbs
Color: Orange
This is a very good value for a very good quality boat trailer winch. The quality is impressive especially for it being a budget friendly price. It was even nicer and more sturdy looking and feeling than I expected. It’s sturdy, well made and it looks like it’s going to hold up very well. It’s a style that’s meant to be attached to a boat trailer or other surface to pull a boat or other item. Installation hardware is included with it to help install it on your boat trailer or other surface. The 3,500 (1.7 tons) pound capacity is the pulling weight strength. You won’t want to try to use it with anything weighing above 3,500 pounds. They did not list a break strength rating, just the pulling weight. The sturdy polyester strap is on a roll and is pre-installed. The strap length is 33 feet. The quality of the strap is good in the materials and the stitching. It’s a bright safety orange tone. It stays on the roll well and fits on it well and securely. The winch has a 2 way ratchet at 4:1 and 8:1 gear ratios. The gears are high carbon speed with dual speed ratios and 2 speeds. You use the faster speed for lighter loads and slower for heavier loads for more control. It has a good feel and works well It has 3 directions: forward (pulling), middle (two directions, but only when it’s unloaded, it’s the default position) and reverse (releasing). You will have to assemble the handle onto it but it’s fairly quick and easy to do. The handle is a good length at 10.2 inches long. It has a good grip with the anti slip handle and it works well. It’s removable vs one you have to leave installed. The hook end is a large, sturdy, heavy solid alloy steel hook in a gold toned finish. The metal on the winch body and handle is made of an ebony finished high carbon steel as well as the gears. The gears are thickened to 8mm. It has a corrosion resistant galvanize finish. It is rated for marine and outdoor environments and to be weather resistant. Instructions and attachment hardware are included. You may also want to look at, save or print the listing details and instructions. No storage bag or case is included. No extra strap, hook or rigging is included, just the winch as it’s pictured. Be sure this is the right style, length, attachment and weight capacity for your use. They have the measurements in detail in the listing pictures. The base attachment measures: 7.5 inches long by 3.9 inches wide. Be sure not to overload the weight capacity of 3,500 pounds (1.7 tons) pulling weight. Note that this is the pull load capacity. Note that this is a manual, non powered winch that you have to adjust and operate by hand. I don’t know if there is a way to modify it with a kit to use it with or convert it into a powered winch.
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Reviewed in the United States on September 17, 2025 by Mia Mia
Size: 3500 lbs
Color: Orange
🛠️ Installation & Build Quality Solid out of the box. The winch mounts cleanly with standard bolt spacing—no need to drill or modify. The steel frame feels stout, and the galvanized finish holds up well against salt spray and grime. Strap came pre-installed and tensioned right, saving setup time. Hook is heavy-duty and didn’t deform under load. ⚙️ Gear Ratio & Ratchet Function The dual-speed 4:1 and 8:1 gear ratios are a game changer. High-speed mode is great for light loads or quick retrieval, while low-speed gives you the torque to haul heavier boats without busting a knuckle. The 2-way ratchet is smooth—no binding or awkward clicks—and it locks in solid both directions. 🧵 Strap & Handle Ergonomics The 33FT polyester strap is thick, tightly woven, and didn’t fray even after repeated use. Handle is long enough for leverage but compact enough to avoid snagging. The textured grip is a nice touch—no slipping even with wet hands or gloves. 📦 Packaging & Setup Came boxed , no damage. instructions included, but if you’ve mounted a winch before, it’s intuitive. Would’ve liked a torque spec or bolt size chart for first-timers. ✅ Pros • Strong pull capacity—handled a 17' boat without strain • Dual gear ratios offer flexibility for different loads • Comfortable handle with anti-slip grip • Strap is durable and well-secured • Ratchet mechanism is reliable and easy to operate ❌ Cons • No torque specs • Handle isn’t removable, which could be a storage issue for tight setups 🧭 Bottom Line This winch punches above its price point. If you’re hauling boats, jet skis, or gear on a flatbed, it’s a dependable workhorse. The gear ratios give you options, and the build quality feels like it’ll last through seasons of use. I’d trust it on any trailer in my fleet.
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Reviewed in the United States on September 15, 2025 by TOM SCHLOTT TOM SCHLOTT
Size: 3500 lbs
Color: Orange
Five stars, barely. I have a few initial concerns but without having put this to use as of yet, I'll hold off on dropping the rating. I recently bought a brand new trailer for my 16 ft Boston Whaler and the made in America 1100 lb rated winch works well enough but in some circumstances when I can't sink the trailer far enough I am forced to winch it instead. The winch works but it is a bit difficult to crank due to the drag on the bunks. This particular winch is rated at 3500 lb and as you can see in the pictures definitely has a bigger spool and a better handle. I'm certain it will be easier to crank and I even noticed it while I was cranking it without being mounted. That said I do question it's rating. It's pull capacity is over three times what the original winch is and yet the strap material is no thicker and only slightly wider. Furthermore the sewing in the area where the strap wraps through the clasp seems weaker than on the 1100 lb winch. I may be splitting hairs on that one but other than the size of the spool and better handle, I don't see how this one's rated so much higher than the stock one. Otherwise the mechanisms are solid and there's definitely a nice heavy feel to all of the components. I'll put this to the test for a year and report back with any changes.
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Reviewed in the United States on September 23, 2025 by Winter Winter