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Complete CURT Class 2 1-1/4" trailer hitch and 5-flat wiring kit (with 4-way to 5-way adapter for surge brakes) engineered for the 2017 - 2022 Kia Niro Excluding plug-in and EV models. Vehicle-specific fit, plug-and-play installation, all hardware and instructions included.
This custom kit fits the following vehicles:
All Hardware and Installation Instructions Included!
Whatever the next checkpoint is on your adventure -- whether it's getting your bike on the trail before sunrise or making it to the campground before dark -- CURT class 2 hitches let you Bring It with confidence. These receiver hitches are made to handle most light-duty towing applications and offer a custom fit for your vehicle. Typically used on full-size cars, crossovers, compact SUVs, minivans or even compact pickup trucks, a CURT class 2 trailer hitch complements the design of smaller vehicles. This particular class 2 hitch is made to be a custom hitch for certain years of the Kia Niro (except Plug-In; to verify vehicle compatibility, see application info). It offers a weight carrying capacity of 3,500 lbs. GTW and 350 lbs. TW. Class 2 trailer hitches can typically be used to tow a variety of lightweight trailers, such as a small utility trailer, small fishing boat trailer or popup camper (NOTE: Never exceed the lowest weight capacity of any towing component). They are also perfect for adding cargo space to your vehicle with a bike rack or cargo carrier. This class 2 hitch features a 1-1/4" receiver tube to accept a ball mount shank or other hitch-mounted accessory. For safety, it is tested in accordance with SAE J684. A custom trailer hitch design requires extra care, and as such, CURT class 2 hitches are engineered using real vehicles and hands-on research. We use high-strength steel, robotic welding and rigorous testing to produce hitches that are built to fit your lifestyle. To ensure that each hitch will be a reliable extension of your vehicle, we also finish our hitches in a co-curing of liquid A-coat and black powder coat, giving them long-lasting rust and wear resistance.
If your vehicle is not equipped with wiring for towing a trailer, CURT custom wiring is the ideal solution. A custom wiring harness -- also called a T-connector -- is a simple, plug-and-play electrical device that plugs into your automotive electric system and provides a standard, universal trailer wiring connection. This is done using two or more vehicle-specific, OEM-compatible connectors to plug into the taillight assembly, eliminating the need for cutting, splicing and soldering during installation. Custom wiring harnesses are made vehicle-specific, and while they are not available for all vehicles, they do offer one of the fastest, easiest and most secure ways to wire a vehicle for towing. This particular plug-in harness provides a 4-way flat connector socket and is designed to be a custom wiring harness to fit certain years of the Kia Niro (to verify your vehicle compatibility, see application info). It comes with all necessary wiring components to establish a reliable trailer wiring connection, as well as a dust cover to keep the connector clean when not in use. You have a picture in mind of your next destination -- maybe it's the boat landing at your favorite fishing spot, maybe it's a campsite that overlooks one of nature's masterpieces, or maybe it's the next big jobsite. However, turning that picture into a reality takes more than just daydreaming. It takes a solid connection and the right amount of power. CURT custom wiring is made with some of the most sophisticated technology in the industry and is designed to install with ease, giving you a long-lasting electrical connection for your towing hitch setup.
CURT offers a variety of high-quality trailer hitches and accessories for select vehicle models. Find the perfect fit for your towing needs at TowUniverse.
CURT, a Lippert brand, offers a complete line of towing products and is the leading manufacturer of custom-fit trailer hitches. We offer the broadest selection of custom-fit hitches, and each one is designed, welded, and coated in Wisconsin.
CURT is also a leader in flat towing products, as well as 5th wheel, gooseneck, and weight distribution hitches, ball mounts, electrical components, cargo solutions, and other towing accessories.
For everything from passenger cars and vans to full-size pickups and SUVs, CURT is 'The First Name in Towing Products®.'
Experts available to answer your questions
Call 888-634-94941 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2017 - 2022 | Kia Niro | Excluding plug: in and EV models |
Yes, the 17 - 22 Kia Niro Excluding plug-in and EV models Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12171 (Part #5W-CHW-2030) is designed to fit the 2017-2022 Kia Niro.
The 17 - 22 Kia Niro Excluding plug-in and EV models Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12171 (Part #5W-CHW-2030) fits 2017-2022 Kia Niro models. The 2022 model year is the last year covered by this part number. For newer models, check for an updated version.
The 17 - 22 Kia Niro Excluding plug-in and EV models Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12171 (Part #5W-CHW-2030) fits the following vehicles: 2017-2022 Kia Niro. Always verify your specific year, make, and model before ordering.
The 17 - 22 Kia Niro Excluding plug-in and EV models Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12171 (Part #5W-CHW-2030) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, CURT part number 12171 is designed for 2017-Present Kia Niro CUV models. Confirm your vehicle year and model match this range before purchasing.
The CURT 12171 is rated for a maximum trailer weight of 3,500 lbs. and tongue weight of 350 lbs. when used as a weight-carrying hitch. However, you must never exceed your vehicle manufacturer's recommended towing capacity, which may be lower. Check your vehicle's owner manual for the final towing limit.
The CURT 12171 is designed for use with ball mount #45521. Euro mount options are also available: #45571 (1 7/8" ball) and #45572 (2" ball).
No, but the exhaust system must be lowered during installation. The installation requires removing 3 rubber exhaust isolators (1 on the driver side, 1 on the passenger side, and 1 in the center) to lower the exhaust. These isolators are then reinstalled after the hitch is secured.
No. The CURT 12171 requires no drilling. It uses existing weld nuts on the frame rails and the fishwire method to route fasteners through access holes in the frame.
A 3" x 5" section of the plastic panel must be trimmed using aviation shears. The panel is temporarily removed during installation, the trim section is marked out using masking tape, and you should confirm the trim prior to reinstallation. The panel is then reinstalled after the hitch is secured.
Required tools are: ratchet, torque wrench, 6" socket extension, 12mm socket, 16mm socket, 11/16" socket, masking tape, aviation shears, and safety glasses. A screwdriver is also needed to remove plastic push pins during step 2.
The kit includes: 4 M10x1.25 hex cap screws (part 10-10271), 4 conical tooth washers 3/8" (part 30-00148), 2 7/16"-14 UNC carriage bolts 1-1/4" (part 10-10281), 2 7/16"-14 UNC serrated flange nuts (part 20-00103), 2 square hole spacers .250 x .88 x 2.25" (part CM-SP2), and 2 pieces of 7/16" fishwire (part 7_16 FISHWIRE).
Two people may be required to ease installation. The manual notes this as a helpful recommendation but does not state it as a strict requirement.
Professional installation time is approximately 45 minutes. Novice (DIY) installation time is approximately 20 minutes.
Safety glasses must be worn at all times while installing this product. Before beginning installation, read all instructions thoroughly. If you are hesitant to undertake this task on your own, contact an authorized CURT installer for additional assistance.
All M10 hardware (the 4 M10x1.25 hex bolts) must be torqued to 45 ft-lbs. All 7/16" hardware (the 2 carriage bolts and 2 flange nuts) must be torqued to 59 ft-lbs. Use a torque wrench to achieve these specifications.
Periodically check the receiver hitch to ensure all fasteners are tight and all structural components are sound. The manual does not specify a retorque interval, so consult CURT technical support at 877-287-8634 for guidance on inspection frequency.
The fishwire method is used to route the 7/16" carriage bolts and spacers through the frame rail access holes. Two 7/16" fishwires are reversed (fed through) the access hole on each side of the frame rail to pull the bolts and spacers into position. The fishwires are then removed and the bolts are secured with flange nuts.
1. Remove the metal exhaust guard and lower the exhaust system. 2. Trim the plastic panel. 3. Use fishwires to route the 7/16" carriage bolts and spacers through the frame rail access holes. 4. Raise the hitch into position and feed the fishwires through the center hole. 5. Remove the fishwires and loosely secure with 7/16" hex flange nuts. 6. Install the 4 M10 hex bolts and 4 conical tooth washers (2 on each side). 7. Torque all M10 hardware to 45 ft-lbs. and all 7/16" hardware to 59 ft-lbs. 8. Reinstall the exhaust system and plastic panel.
The 7/16" carriage bolts and flange nuts should be loosely secured initially in step 4. All fasteners are then fully torqued in step 6 after the M10 bolts and washers are installed. This sequence ensures proper alignment before final tightening.
The 4 bolts securing the metal exhaust guard are removed and returned to the customer. The manual does not indicate they are reused in the hitch installation, so they should be retained by the vehicle owner.
Yes, the CURT 12171 is designed for 2017-Present Kia Niro CUV. Maximum trailer weight is 3,500 lbs. and tongue weight is 350 lbs., but never exceed your vehicle manufacturer's recommended towing capacity.
No drilling is required. The hitch uses existing frame rail weld nuts and the fishwire method to route fasteners through access holes.
A 3" x 5" section of plastic panel must be trimmed using aviation shears. The panel is temporarily removed, the trim section is marked with masking tape, and confirmed before reinstallation.
Required tools: ratchet, torque wrench, 6" socket extension, 12mm/16mm/11/16" sockets, masking tape, aviation shears, screwdriver, and safety glasses.
M10 hex bolts: 45 ft-lbs. 7/16" carriage bolts and flange nuts: 59 ft-lbs. Use a torque wrench for accuracy.
Wear safety glasses at all times. Read all instructions before beginning. Never exceed your vehicle manufacturer's recommended towing capacity. If hesitant, contact an authorized CURT installer.
Periodically check that all fasteners are tight and all structural components are sound. Consult CURT technical support at 877-287-8634 for recommended inspection intervals.
The Curt 56376 is a custom wiring harness that integrates trailer lighting circuits with your vehicle's electrical system. It provides signal circuits rated at 3.0 amps per side and tail/running circuits rated at 6.0 amps total, allowing you to connect a trailer with a 4-flat connector.
Yes, the Curt 56376 is designed for the Kia Niro. The installation instructions are specific to this model and include detailed steps for accessing the taillight connectors and interior trim panels on this vehicle.
The manual only confirms fitment for the Kia Niro. Do not assume it fits other Kia models. Contact Curt Manufacturing or check the fitment database for compatibility with other vehicles.
You will need: ratchet, ratchet extension, 10mm socket, Phillips screwdriver, panel trim removal tool, wire stripper, wire crimper, and cutting tool. A drill may be needed if a suitable grounding point with an existing screw is not available.
The harness includes: custom wiring harness with yellow and green wire ends, white ground wire with ring terminal, provided screw for grounding, black converter box with double-sided tape, 4-flat connector with dust cover, and cable ties for securing loose wires.
You must remove: all trunk floor coverings and storage trays, the rear scuff panel (secured by Phillips screws), the lower interior side trim panel fasteners, and the upper side trim panel (using a panel trim removal tool). The taillight wiring harness connectors are located behind the interior side panel, wrapped in foam tape.
Remove the foam tape from the vehicle's taillight wiring harness connectors and separate them from the taillight housing, taking care not to damage the locking tabs. Insert the custom wiring harness end with the yellow wire between the separated connectors. Ensure the connectors are fully inserted with locking tabs in place.
The yellow wire end connects to the driver side taillight connector, and the green wire end connects to the passenger side taillight connector. The green wire end is routed down behind the interior side panel and out to the passenger side to complete the installation on both sides of the vehicle.
Drilling may be required for the ground wire installation. You must locate a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame. If no existing screw is available, you must drill a 3/32" pilot hole. The area must be free of rust, dirt and paint before securing the white ground wire with the ring terminal and provided screw.
Drill a 3/32" pilot hole if a suitable existing screw with nut is not available in the vehicle frame near the taillight connector.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this rating can cause loss of warranty, overheating and potential fire. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
Signal circuits are rated at 3.0 amps per side. Tail and running circuits are rated at 6.0 amps total. Do not exceed these ratings or the tow vehicle lamp load rating, whichever is lower, to avoid loss of warranty, overheating and potential fire.
Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
All steps must be followed to ensure the wiring harness functions properly. Once installed, test for proper function by using a test light or connecting a properly wired trailer.
When not in use, roll up the 4-flat connector and store it in a convenient, out-of-the-way location inside the trunk. When in use, route it to the center of the vehicle and out of the trunk. Install the provided 4-flat dust cover to help prevent corrosion.
Locate a flat spot near the taillight wiring harness that is out of the way of the side trim panels. Adhere the black converter box using the provided double-sided tape.
Secure any loose wires with the provided cable ties. This helps keep the installation neat and prevents wires from interfering with trim panels or other components.
The battery connection must be fuse-protected with a 10-amp maximum. Exceeding this can cause loss of warranty, overheating and potential fire.
Test for proper function using a test light or by connecting a properly wired trailer.
| Bulk # | Pkg # | Width | Height | Depth | Description | Loads From | Includes |
|---|---|---|---|---|---|---|---|
| Breakaway Replacement Parts | |||||||
| 52010 | 52011 | -- | -- | -- | Breakaway switch with 10' leads | -- | Nylon case with weldable high-temp, metal tab and silver contact points |
| 52020 | 52021 | -- | -- | -- | 48" lanyard | -- | -- |
| 52023 | -- | 3-1/2" | 4" | 2-3/4" | Sealed lead acid battery for 1-3 axle trailers (12-volt, 5 amps per hour) | -- | -- |
| 52025 | -- | -- | -- | -- | 12-volt battery charger plug | -- | -- |
| Replacement Battery Cases | |||||||
| 52029 | -- | 5" | 3-1/4" | 3-7/8" | 3-1/8" inside bracket depth | Top | Weldable metal bracket for easy mounting on A-frame or jack posts |
| 52030 | -- | 5" | 3-1/4" | 3-7/8" | -- | Side | -- |
| 52027 | -- | 5" | 3-3/8" | 3-3/4" | Watertight case with rubber gaskets and screw-tight lid | Top | Four-screw lid |
| 52022 | -- | 6" | 5-1/2" | 3-1/4" | -- | Top | Lockable tab and a bolt-on mount |
| 52090 | -- | 5-7/8" | 5-3/8" | 3-1/2" | -- | Top | Metal bracket / locking bar for security |
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