Trailer Hitch Lock & Safety Guide (Canada)

A hitch that is easy to use is also easy to steal from if you leave the shank, ball mount, or trailer unlocked. This guide covers hitch locks, coupler locks, and simple Canada parking habits.

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Browse the locks collection and hitch accessories. Prefer the full index? Open the towing guides hub.

Official CURT videos (pins, locks & coupler hardware)

Public videos from the CURT YouTube channel (@curtmfg). Watch here, then keep reading.

If an embed does not load in your browser, use the YouTube link under each card.

Tri-Ball Universal Coupler Lock Features & Benefits | 23082

CURT · Coupler lock overview (23082)

See how a universal coupler lock blocks the coupler so a parked trailer is harder to hook and roll away.

Watch on YouTube →

How to Install Hitch Pin - CURT Manufacturing

CURT · Hitch pin install basics

The everyday pin & clip (or locking pin) that keeps a ball mount or accessory shank in the receiver.

Watch on YouTube →

CURT Anti-Rattle Hitch Clamp | No Tools Needed

CURT · Anti-rattle clamp overview

Tightens the shank in the receiver — less rattle on highway runs and a snugger accessory fit.

Watch on YouTube →

How To Replace Trailer Latch Coupler Hardware | CURT

CURT · Coupler latch hardware refresh

Worn latch parts make couplers harder to secure — replace hardware before you rely on a lock alone.

Watch on YouTube →

Three layers of hitch security

Receiver

Hitch locks & locking pins

Upgrade the plain pin so a ball mount, bike rack, or cargo carrier cannot be pulled out without a key. Use a lock sized for your receiver (commonly 2″ Class III/IV).

  • Keeps accessories on the vehicle when parked
  • Does not replace a coupler lock on a trailer
  • Pair with an anti-rattle device if the shank chatters

Shop locks →

Trailer

Coupler locks

A coupler lock fills or blocks the coupler so another vehicle cannot drop a ball in and drive off. Critical for boat, utility, and camping trailers left in driveways or storage yards.

  • Match coupler style (universal / tri-ball designs exist)
  • Use whenever the trailer is unhitched in public view
  • Combine with a receiver lock if a mount stays on the tow vehicle

Pin & clip (the baseline)

  • What it does: A hitch pin through the receiver and shank keeps the mount or accessory from sliding out. The clip keeps the pin from walking out.
  • When a plain pin is fine: Short stops where you stay with the vehicle — still insert the clip every time.
  • When to upgrade: Overnight parking, bike racks left on, or walk-up theft risk — switch to a locking hitch pin.
  • Install tip: Watch the CURT hitch-pin video above. Never drive with a missing clip.

Theft-prevention basics (Canada)

Habit 1

Lock unhitched trailers

Coupler lock on whenever the trailer sits alone — driveway, cottage road, or storage lot.

Habit 2

Lock the receiver

If a ball mount or rack stays on the vehicle, use a hitch lock — not only a spring clip.

Habit 3

Visible + layered

Locks deter opportunists. Add lighting and a visible spot. Do not leave keys in a coupler lock head.

Habit 4

Maintain hardware

Rusty latches and bent pins fail when you need them. Refresh coupler hardware and keep lock cores lubricated for winter.

What locks do not replace

  • Not a tow rating — a locked undersized hitch is still unsafe for a heavy trailer.
  • Not wheel security alone — high-value trailers may also need wheel locks or tracked storage.
  • Not correct coupling — on the road, the coupler latch, safety chains, and brakes (where required) keep the trailer attached.
  • Not optional lighting — trailer lights and a solid harness still matter every trip. See the wiring guide.

Quick security checklist

Step 1Pin every trip

Clip or lock through the receiver before you roll.

Step 2Lock when you walk away

Receiver lock for mounts/racks; coupler lock for unhitched trailers.

Step 3Check the latch

Coupler closed, chains crossed, breakaway cable attached when towing.

Step 4Winter care

Lube lock cores; replace bent pins and rusty coupler hardware.

Related guides & shopping

Bike & Cargo GuideRacks and carriers on a hitch Ball Mount GuideDrop, rise, tongue weight Wiring GuideHarnesses and converters How to ChooseClasses + videos Towing Guides HubAll guides

Locks Collection

Browse hitch locks, coupler locks, and related security hardware. Pair with a CURT receiver from the trailer-hitches collection.

Open locks →

Also useful

Pins, clamps, and mounts live with hitch accessories. Confirm receiver size on your hitch product page first.

Hitch accessories →
Trailer hitches →
Ball mounts →
All towing →

More help: towing guides hub · weight distribution · wiring & electrical · contact support