How to Select a Trailer Hitch
Why the hitch receiver in the box is only one piece of a towing system, and how class and receiver size decide which extras fit.
Watch on YouTube →Hitch Hardware: What Is in the Box (Canada)
Opened a CURT hitch box in a Canadian driveway and wondering what you actually got versus what you still need to tow or hang a bike rack? Most CURT hitch kits ship the receiver, the vehicle-specific hardware, and the instruction sheet. They do not usually include a ball mount, a trailer ball, a hitch pin and clip, or a wiring harness. This page is the parts-counter walkthrough of what is typically in the carton, what you still need, when extras are worth buying, and which Canada guides to open next so the first trip is not a second trip to the store.
Practical unboxing help for Canadian CURT hitch shoppers and shops. Free shipping on CURT towing gear from Lots of Parts when the SKU is live on this store.
Pair this page with
ball mount guide,
wiring harness guide,
pin, clip, and safety chains, and
bolt torque tips.
Prefer the full index?
Open the towing guides hub.
Watch these CURT videos first
All four videos are from the official CURT YouTube channel (@curtmfg). Use them to understand hitch selection, install habits, wiring, and ball-mount height before you decide which extras to add to the cart.
If an embed does not load, use the YouTube link under the card.
Trailer Hitch Installation Techniques
What the install video shows about hardware that shipped in the kit versus tools and torque habits you still need on the driveway.
Watch on YouTube →How to Connect a Trailer Wiring Harness
Why wiring is almost never in the hitch carton, and how a vehicle-specific four-flat is meant to plug in when lights matter.
Watch on YouTube →How to Choose a Ball Mount and Trailer Ball
Why a ball mount and trailer ball are separate purchases, and how drop versus rise keeps a trailer level behind your bumper.
Watch on YouTube →What usually comes in a CURT hitch kit
Expect the welded receiver assembly that matches your vehicle-specific SKU, a bag or tray of bolts, spacers, washers, and nuts sized for that installation, and the printed instruction sheet for that part number. Many kits also include fish-wire helpers or sleeve stacks called out on the sheet. Powder coat is on the hitch. The carton is not a complete tow package.
Read the packing list against the instruction sheet before you throw cardboard away. If a spacer or fish wire is listed and missing, stop and sort it out before you climb under the vehicle. Use only the hardware that shipped for that SKU unless the sheet says otherwise. Random hardware-store bolts are not a substitute plan.
What you still need after you open the box
Three extras show up in almost every driveway conversation. A ball mount (or a hitch-mounted rack shank) that matches your receiver tube size. A hitch pin and clip, or a lock, to retain that mount in the receiver. Trailer wiring when you will tow anything with lights. Safety chains, a coupler check, and a trailer ball sized to the coupler are part of the trailer side of the job, not the hitch carton.
| Item | Usually in the hitch box? | What we tell shoppers |
|---|---|---|
| Receiver hitch | Yes | Vehicle-specific CURT SKU with the hardware bag and instruction sheet. |
| Mounting hardware | Yes | Bolts, spacers, and washers called out on the sheet for that part number. |
| Ball mount | No | Buy a mount that matches receiver size and the drop or rise you measured. See the ball mount guide. |
| Trailer ball | No | Match ball diameter to the trailer coupler. See the trailer ball size guide. |
| Pin and clip | No | Pin or lock retains the mount. Read pin, clip, and safety chains. |
| Wiring harness | No | Vehicle-specific four-flat or seven-way is a separate card. See the wiring harness guide. |
| Bike rack | No | Rack shanks must match receiver size. Read hitch for bike rack only. |
| Torque values | On the sheet | Follow the instruction sheet. See bolt torque tips for the mindset without invented numbers. |
Step 1Inventory the carton
Match the packing list and hardware bag to the instruction sheet for your SKU before you start.
Step 2Decide the job
Bike rack only, light trailer, or both. That choice drives ball mount, pin, and wiring extras.
Step 3Match receiver size
One and one quarter inch versus two inch accessories are not interchangeable. See the receiver size guide.
Step 4Add lights when needed
Buy a vehicle-specific harness when the trailer has lights. Do not assume the hitch box included wiring.
When to buy extras with the hitch
If you already own a level ball mount and pin that match the new receiver size, you may only need the hitch and a careful install. If this is your first hitch, order the mount, pin or lock, and wiring in the same cart so the weekend install does not stall. Measure drop before you guess at ball-mount height. Open how to measure ball mount drop with a tape and a helper.
Bike-rack-only shoppers can skip the trailer ball and sometimes skip wiring, but they still need a pin and a rack shank that fits the tube. Towing shoppers need lights that match the trailer plug. When four-pin versus seven-pin is unclear, read four-pin versus seven-pin trailer wiring before you buy adapters by habit.
Mount
Ball mount guide
Open the ball mount trailer hitch guide for drop, rise, and class matching after the hitch is on the vehicle.
Lights
Wiring harness guide
Use the trailer wiring harness guide to pick a vehicle-specific four-flat or seven-way instead of splicing blind.
Retention
Pin and clip
Read pin, clip, and safety chains so the mount stays in the receiver and chains are not an afterthought.
Torque
Bolt torque tips
Pair hitch bolt torque tips with the instruction sheet after the hardware from the box is started by hand.
A simple Canada unboxing workflow
Day the box arrives: check the SKU on the carton against your order, lay out the hardware bag, and download or unfold the matching instruction sheet. Same day or next: decide rack versus trailer, measure for ball-mount drop if you are towing, and add pin, mount, and wiring to the cart if they are not already on the shelf in your garage. Install day: follow the sheet, torque to the printed values, then recheck after the first trips. Free shipping on live CURT gear from Lots of Parts does not change the need for those extras when the job leaves the driveway.
Print the weekend install checklist so carton inventory, extras, and torque sit on paper. If fascia trim is on the sheet, read fascia trim tips before you cut bumper plastic.
Related guides we do publish
Ball mount guideDrop, rise, and class
Wiring harness guideFour-flat and seven-way
Pin and clipRetention and chains
Bolt torque tipsSheet authority
Weekend checklistDriveway day plan
Towing guides hubAll vehicle and topic guides
Lots of Parts · Canada hitch hardware what is in the box guide with verified CURT embeds only. No fake reviews, no invented kit contents.
