An electric trailer winch does a different job from a truck winch: the load rolls. A car on a trailer’s ramps resists with grade and friction — roughly a quarter to a third of its weight on typical ramps — not the dead-weight pull of a stuck vehicle, which is why trailer winches are smaller, and why the two features that matter most here are a real brake (the load must never roll back when you let go of the button) and honest duty ratings. This guide ranks the verified electric picks that live on the trailer. Vehicle-mounted winches for loading cars are our car trailer winch guide; hand winches for boat trailers are our boat trailer guide.
How we researched: Dutton-Lainson, Champion and Superwinch (Westin) data matched to exact model numbers. We do not test winches. Where a maker’s trailer-relevant figures could not be verified (several, on the ATV-derived picks), the tables print Not published instead of borrowing numbers.
Short answer: buy the StrongArm SA9000DC — the only purpose-built trailer winch here, with a true automatic brake. Utility trailers on a budget take the Champion 4500 kit; small trailers take the LT3000.
Size a trailer winch by rolling load, not dead weight
The pull a trailer winch must make is the load’s weight times the ramp grade factor — the load rolls, so gravity only claims the slope’s share:
| Load being winched | Flat / shallow ramps | Typical trailer ramps | Steep ramps |
|---|---|---|---|
| 2,000 lb (small car, mower, quad) | ~500 lb pull | ~700 lb pull | ~1,000 lb pull |
| 3,500 lb (mid-size car) | ~900 lb pull | ~1,200 lb pull | ~1,750 lb pull |
| 5,000 lb (truck, tractor) | ~1,300 lb pull | ~1,700 lb pull | ~2,500 lb pull |
| Rule | Level ground: ~25% of load weight | Most ramps: ~33% | Steep: ~50% — and check the brake first |
Then buy the winch whose rating clears that pull with margin on a wound drum — ratings are first-layer figures, and trailer loads sit at the end of a long line. (This is why this guide carries a sizing table instead of our vehicle calculator: the GVW × 1.5 rule is for stuck vehicles, not rolling loads.)
No button, on purpose: the Powerwinch 912 is a respected trailer/boat electric, but it has no verified Amazon listing we can link honestly, so it is recommended here in words — buy it from a marine dealer. A buying guide that only lists what it can link is a catalogue, not a guide.
Our top electric trailer winches
Best Purpose-Built Trailer Winch
Dutton-Lainson StrongArm SA9000DC
3,000 lb · Steel cable · Brake: Automatic friction + dynamic
Best for Utility Trailers
Champion 4500 lb Wireless Kit (14560)
4,500 lb · Synthetic · Brake: Not published
Best Small-Trailer Budget
Superwinch LT3000ATV
3,000 lb · Steel cable · Brake: Not published
Best Heavier Utility
Superwinch Terra 35 (Steel)
3,500 lb · Steel cable · Brake: Not published
Electric trailer winches compared
| Winch | Rated pull | Gear ratio | Line | Brake | Warranty | Our Score | Price |
|---|---|---|---|---|---|---|---|
| Dutton-Lainson StrongArm SA9000DC | 3,000 lb | 570:1 | Steel cable | Automatic friction + dynamic | See maker | 9.2 | |
| Champion 4500 lb Wireless Kit (14560) | 4,500 lb | Not published | Synthetic | Not published | 2-year limited (kit line) | 8.5 | |
| Superwinch LT3000ATV | 3,000 lb | Not published | Steel cable | Not published | See maker | 8.2 | |
| Superwinch Terra 35 (Steel) | 3,500 lb | 140:1 | Steel cable | Not published | Not published (sources conflict) | 8.0 |
How our score works: trailer fit (braking behaviour, mounting, duty) 35% · published-spec honesty 20% · controls and safety features 20% · owner feedback 25%. Our Score is editorial judgement based on published specs and owner reports, not test results.
Recovery safety: never stand in line with a loaded trailer winch cable, and never trust a winch without a brake to hold a load on ramps while you reposition — chock the load first. The brake column in the table above is a safety column, not a feature list.
1. Dutton-Lainson StrongArm SA9000DC — Best Purpose-Built Trailer Winch
The SA9000DC is the trailer specialist: a 3,000 lb electric built for tongue mounting, with 570:1 gearing, an automatic friction brake PLUS a dynamic brake (the pair that makes ramp work safe), and an emergency hand crank for a dead battery. Its full record is in our boat trailer guide, where it holds the electric slot — it tops this general guide on the same evidence.
| Rated pull | 3,000 lb (electric) |
| Gear ratio | 570:1 |
| Brake | Automatic friction brake + dynamic brake |
| Backup | Emergency hand crank |
| Maker | Dutton-Lainson (USA) |
Pros
- True automatic brake
- Purpose-built for trailers
- Crank backup
Watch-outs
- 3,000 lb ceiling
- Premium of the group
What owners say: Carried from our boat trailer guide research — brake behaviour is the praised trait.
2. Champion 4500 lb Wireless Kit (14560) — Best for Utility Trailers
Champion’s 4500 wireless kit is the utility-trailer workhorse: 4,500 lb, synthetic line and a wireless remote that suits walking a load up ramps while watching it — the same kit our ATV guide ranks for quads. Its trailer-specific paperwork is thinner (Champion publishes the kit for ATV/utility duty; dedicated brake and gear figures for trailer use are not published), and the table says so.
| Rated pull | 4,500 lb |
| Line | Synthetic |
| Controls | Wireless remote + rocker |
| Gear ratio | Not published |
| Brake | Not published |
| Warranty | 2-year limited (kit line) |
Pros
- Wireless control for ramp work
- Synthetic line
- Kit completeness
Watch-outs
- Brake/gear figures not published
- ATV-derived, not trailer-built
What owners say: Kit record carried from our ATV guide research.
3. Superwinch LT3000ATV — Best Small-Trailer Budget
The LT3000 is the small-trailer budget answer — mowers, quads, jet skis and light utility loads whose rolling pull (see the table) sits far under its 3,000 lb rating. It appears in our UTV research only as a drop (a 3,000 lb ATV winch has no business on a UTV); on a small trailer, honestly sized, it is exactly in class. Maker trailer-duty figures beyond the rating are not published.
| Rated pull | 3,000 lb |
| Line | Steel cable |
| Gear ratio | Not published |
| Brake | Not published |
Pros
- Right-sized for small trailers
- Simple and proven
- Budget position
Watch-outs
- No published brake figure — chock loads, always
- Small loads only
What owners say: A long-running Superwinch staple; trailer-specific owner coverage is thinner than its ATV record and the pick is labelled accordingly.
4. Superwinch Terra 35 (Steel) — Best Heavier Utility
The Terra 35 is the heavier utility option: 3,500 lb with gearing this rebuild prints as 140:1 — correcting a 198:1 figure a retailer has circulated (the error and the warranty-source conflict are documented in our plowing research). Steel line, weather-sealed language but no published IP figure, and no published brake spec: a strong puller whose paperwork is the caveat.
| Rated pull | 3,500 lb |
| Gear ratio | 140:1 (a retailer’s 198:1 is an error) |
| Line | Steel cable |
| Sealing | Not published |
| Brake | Not published |
| Warranty | Not published (sources conflict) |
Pros
- Strongest pull here after the Champion
- Proven Superwinch platform
Watch-outs
- Conflicting published figures
- No published brake spec
What owners say: Plowing-guide research carries its record (plowing guide).
Loading heavy cars? Read this first
Above roughly 2,500 lb of rolling pull — heavy cars on steep ramps, dead vehicles that cannot roll — trailer winches give way to vehicle-class electrics on tongue or cradle mounts. That full guide is our car trailer winch guide (X2O 10K, VR EVO 10, Champion 11008 kit), and the removable-format options are in our portable truck guide. This page stays with the winches that belong on the trailer full-time.
Electric trailer winch FAQ
What size electric winch do I need for a trailer?
Size by rolling pull, not load weight: roughly a third of the load on typical ramps. The table above converts your load and ramps into the pull to beat.
Why does the brake matter so much?
On ramps, letting go of the button must mean the load stops — not rolls back. Only the StrongArm here publishes a true automatic brake; with the others, chock before you reposition.
Can I power it from the tow vehicle?
Yes — most tongue winches run from the tow vehicle’s battery via long leads, or a trailer-mounted battery kept on a maintainer. Either way, engine running while winching.
Electric or hand winch for a trailer?
Electric for cars and frequent loading; hand winches (our boat trailer guide) win on simplicity for light boats and occasional use.
Our verdict
For trailers: the StrongArm SA9000DC when the load matters, the Champion 4500 kit for utility work, the LT3000 for small trailers and the Terra 35 for heavier utility duty — sized by rolling pull, braked honestly, and cross-linked to the vehicle-class guide when the load outgrows them.
Sources
- Dutton-Lainson: dutton-lainson.com; Champion: championpowerequipment.com; Superwinch/Westin: superwinch.com
- Cross-checked against this site’s verified boat trailer and car trailer guide research, linked in the sections above.
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