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2005 - 2010 Kia Sportage
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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 2005 - 2010 Kia Sportage. 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 Hyundai Tucson and Kia Sportage (to verify vehicle compatibility, see application info). It offers a weight carrying capacity of 3,500 lbs. GTW and 300 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.
CURT custom wiring connectors are the easiest way to outfit your vehicle with a CURT trailer wiring connection. They are built with some of the most advanced technology in the industry, and each one is custom-fitted to work with a specific make and model. Some automotive manufacturers install a special socket on the vehicle to be used for vehicle-to-trailer wiring. Although this special socket is not equipped on every vehicle, a CURT custom wiring connector -- also called a T-connector -- utilizes the socket for simple, stress-free installation. Rather than requiring you to cut, splice and solder into your vehicle's wiring system, the custom wiring connector uses a single OEM-compatible plug and instantly provides a standard, universal vehicle-to-trailer wiring connection, typically in the form a 4-way flat. All CURT custom wiring connectors are made vehicle-specific for the easiest possible installation and the best fit. This particular plug-in connector provides a 4-way flat socket and is designed to be a custom wiring option for certain years of the Kia Sportage (to verify your vehicle compatibility, see application info). It comes with all necessary hardware to establish a solid connection. It also comes with a dust cover to keep the connector socket clean when not in use. To ensure long-lasting reliability, all CURT custom wiring connectors are thoroughly tested for optimal functionality. Stress is the last thing you should feel when towing a trailer -- whether you're hauling your RV to that favorite camping destination, your ATVs up to the hunting grounds or your fishing boat to the new hidden hotspot. At CURT, we think your towing equipment should add to the enjoyment of your experience, not detract from it.

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 |
|---|---|---|
| 2005 - 2010 | Kia Sportage | — |





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The 05 - 10 Kia Sportage Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12126 (Part #5W-CHW-2085) fits the following vehicles: 2005-2010 Kia Sportage. Always verify your specific year, make, and model before ordering.
Yes, the 05 - 10 Kia Sportage Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12126 (Part #5W-CHW-2085) is designed to fit the 2005-2010 Kia Sportage.
The 05 - 10 Kia Sportage Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12126 (Part #5W-CHW-2085) fits 2005-2010 Kia Sportage models. The 2010 model year is the last year covered by this part number. For newer models, check for an updated version.
The 05 - 10 Kia Sportage Curt 1-1/4" Class 2 Trailer Tow Hitch + 5-Flat Wiring Kit Tow Boat/Utility Trailer with Surge Brakes 12126 (Part #5W-CHW-2085) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, Curt part number 12126 is designed for Kia Sportage and Hyundai Tucson vehicles. However, the manual does not specify which model years are compatible. Contact Curt Manufacturing or your retailer to confirm fitment for your specific year and generation.
The Curt 12126 has a gross load capacity of 3500 lbs trailer weight and 300 lbs tongue weight when used as a weight-carrying hitch. However, you must not exceed your vehicle manufacturer's recommended towing capacity, which may be lower. Check your vehicle's owner manual for the maximum towing limit.
The kit includes 6 hex cap screws (HHCS) M10×1.25×35 mm, class 10.9, zinc-plated (part 10-10298) and 6 conical washers 7/16 inch (part 30-00163). These fasteners secure the hitch to the existing frame weld nuts on both sides of the vehicle.
No, drilling is not required. The hitch uses existing weld nuts in the frame rails, so no new holes need to be created.
Two steps are required before installation: (1) Remove the exhaust hangers and lower the exhaust system for ease of installation, and (2) Remove the tow hooks and return them to the customer. The exhaust hangers must be reinstalled after the hitch is secured.
Raise the hitch into position and secure it using the 6 hex bolts (M10×1.25×35) and conical washers provided. Insert the fasteners through the hitch mounting holes and thread them into the existing weld nuts on both the driver and passenger side frame rails.
All 10 mm fasteners must be torqued to 48 lb-ft. This applies to all 6 hex bolts used to secure the hitch to the frame weld nuts.
After the hitch is secured and torqued, reinstall the exhaust hangers that were removed in the first step. This restores the exhaust system to its original position and support.
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. This helps maintain safe operation and prevent loosening due to vibration and use.
The Curt 12126 is designed for use with ball mount part number D-18 / 45518. Consult Curt Manufacturing or your retailer for information about other compatible ball mounts.
Yes, the Curt 12126 is designed for Kia Sportage and Hyundai Tucson. Confirm your specific model year with the retailer.
No. The hitch uses existing frame weld nuts—no drilling needed.
Remove the exhaust hangers and lower the exhaust, then remove the tow hooks. Reinstall the exhaust hangers after the hitch is secured.
Gross load capacity is 3500 lbs trailer weight and 300 lbs tongue weight. Do not exceed your vehicle manufacturer's recommended towing capacity.
The Curt 55529 is designed for Kia Sportage V6 models only. If your Sportage has a V6 engine, this connector will fit. If you have a different engine type, this product is not compatible. Check your vehicle's owner's manual or contact the vehicle manufacturer to confirm your engine type.
The Curt 55529 has two amperage ratings: Signal Circuits are rated at 3.0 amps per side, and Tail/Running Circuits are rated at 6.0 amps total. Do not exceed these ratings or your tow vehicle's lamp load rating, whichever is lower. Exceeding the product rating can cause loss of warranty, overheating and potential fire.
The manual does not specify required tools. However, based on the installation steps, you may need a drill with a 3/32" bit (if drilling a pilot hole for the ground screw), a screwdriver, and possibly a wrench or socket to secure the ground screw with its nut. Contact Curt Manufacturing for a complete tool list.
The vehicle connector is located on the passenger side of your Kia Sportage, between the bumper and rear tire. The connector is marked as S5 and is positioned behind the driver side rear bumper. You will need to remove a protective cover to access it.
Locate the vehicle connector on the passenger side between the bumper and rear tire. Remove the protective cover carefully, taking care not to damage the locking tabs. Insert the custom wiring harness into the vehicle connector, ensuring the connectors are fully inserted and the locking tabs are in place. The connectors must be fully seated for proper function.
Locate a suitable grounding point near the connector, such as an existing screw with nut in the vehicle frame. If no suitable point exists, drill a 3/32" pilot hole for the provided screw. The area must be free of rust, dirt and paint. Secure the white ground wire using the ring terminal and provided screw. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
Locate a flat spot inside the vehicle near the taillight and adhere the black converter box using the provided double-sided tape. The box should be mounted in a secure, accessible location.
When in use, route the 4-flat to the center of the vehicle and out of the trunk. When not in use, roll up and store in a convenient, out-of-the-way location inside the trunk. Secure any loose wires with the provided cable ties to prevent tangling and damage.
After installation, reinstall all items removed during the install. Install the provided 4-flat dust cover to help prevent corrosion. Test the connector for proper function by using a test light or connecting a properly wired trailer. All steps must be followed to ensure the wiring connector will function properly.
Drilling may be required. If a suitable grounding point (such as an existing screw with nut in the vehicle frame) is available near the connector, you can use that. If not, you will need to drill a 3/32" pilot hole for the provided ground screw. Before drilling, check for hidden items behind or under any surface to avoid damage and personal injury.
Do not exceed the product rating (Signal Circuits 3.0 amps per side, Tail/Running Circuits 6.0 amps total) or your tow vehicle's lamp load rating, whichever is lower. Exceeding the product rating can cause loss of warranty, overheating and potential fire. Additionally, check for hidden items before drilling to avoid damage and personal injury.
Test the connector for proper function by using a test light or connecting a properly wired trailer. All installation steps must be followed to ensure the wiring connector will function properly before testing.
Yes, if your Sportage has a V6 engine. The Curt 55529 is designed for Kia Sportage V6 models only.
Signal Circuits: 3.0 amps per side. Tail/Running Circuits: 6.0 amps total. Do not exceed these ratings or your vehicle's lamp load rating, whichever is lower.
Possibly. If an existing screw with nut is available in the vehicle frame near the connector, no drilling is needed. Otherwise, you will drill a 3/32" pilot hole for the provided ground screw.
On the passenger side of your Kia Sportage, between the bumper and rear tire, behind the driver side rear bumper.
Roll it up and store it in a convenient, out-of-the-way location inside the trunk. Secure loose wires with the provided cable ties.
Use a test light or connect a properly wired trailer to verify proper function.
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