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2015 - 2021 Subaru WRX STI
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Complete CURT Class 1 1-1/4" trailer hitch and 4-flat custom wiring kit engineered for the 2015 - 2021 Subaru WRX STI. 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!
However you define adventure -- whether it's climbing onto the back of a mountain bike, hunting from the top of a tree stand or camping with the family a long way from nowhere -- CURT class 1 hitches provide a light-duty towing receiver to help you Bring It. Each is made to fit a specific vehicle, providing easier installation, a better fit and optimal towing capacity. Custom class 1 trailer hitches are available for a variety of smaller vehicle types, including the compact car, crossover, minivan and small SUV. This particular class 1 hitch is designed to be a custom hitch for certain years of the Subaru Impreza, WRX and WRX STI (to verify vehicle compatibility, see the CURT application guide at curtmfg.com). Tested in accordance with SAE J684, it offers a weight carrying capacity of 2,000 lbs. GTW and 200 lbs. TW. It is equipped with 1-1/4" receiver tube opening to accept a ball mount shank or other hitch mount. This class 1 hitch also comes with all necessary mounting hardware. With its lightweight design and smaller receiver tube size, a class 1 hitch is especially useful for adding cargo space with a hitch-mounted bike rack or cargo carrier. They can also typically be used to tow small trailers such as a utility trailer, kayak trailer or teardrop camper (never exceed the lowest weight capacity of any towing component; i.e. the vehicle, hitch, trailer, etc). Though CURT class 1 trailer hitches are only intended for light-duty towing, we apply the same principles of quality as we do to the rest of our rear mount hitches. Each class 1 hitch is made with hands-on engineering, high-strength steel and precise welding. We use a co-cured finish of liquid A-coat, inside and out, and durable black powder coat to provide a lasting defense against rust, chips and UV rays.
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 Subaru WRX (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 |
|---|---|---|
| 2015 - 2021 | Subaru WRX STI | — |
The 15 - 21 Subaru WRX STI Curt 1-1/4", Class 1 Trailer Tow Hitch + 4-flat Wiring Kit 11408 (Part #CHW-2812) fits the following vehicles: 2015-2021 Subaru WRX STI. Always verify your specific year, make, and model before ordering.
Yes, the 15 - 21 Subaru WRX STI Curt 1-1/4", Class 1 Trailer Tow Hitch + 4-flat Wiring Kit 11408 (Part #CHW-2812) is designed to fit the 2015-2021 Subaru WRX STI.
The 15 - 21 Subaru WRX STI Curt 1-1/4", Class 1 Trailer Tow Hitch + 4-flat Wiring Kit 11408 (Part #CHW-2812) fits 2015-2021 Subaru WRX STI models. The 2021 model year is the last year covered by this part number. For newer models, check for an updated version.
The 15 - 21 Subaru WRX STI Curt 1-1/4", Class 1 Trailer Tow Hitch + 4-flat Wiring Kit 11408 (Part #CHW-2812) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Yes, CURT 11408 is designed for 2015-present Subaru WRX and WRX STI sedans. It is also compatible with 2015-present Subaru Impreza sedans and 2012-2014 Subaru Impreza sedans (excluding WRX models).
No. CURT 11408 is designed for 2012-2014 Subaru Impreza sedans (excluding WRX) and 2015-present Impreza and WRX/WRX STI models. Your 2011 Impreza is not listed as compatible.
The manual specifies a gross load capacity of 2,000 lbs. trailer weight and 200 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.
The manual states that all non-trailer loads applied to this product must be supported by CURT 18050 stabilizing straps. Failure to properly support non-trailer loads will void the product warranty. Refer to the CURT catalog or www.curtmfg.com for further information on the 18050 straps.
You will need: aviator shears, 3/4" socket, 10mm socket, ratchet, torque wrench, die grinder, and safety glasses. The manual notes that using proper tools will greatly improve the quality of the install and reduce the time required.
The kit includes: 4 bolts (1/2"-13 UNC, 1-1/2", grade 8, part 10-10287), 4 serrated flange nuts (1/2"-13 UNC, grade 8, part 20-00062), 4 square hole spacers (0.250" x 1.00" x 3.00", part CM-SP6), and 4 pieces of 1/2" fishwire (part 1_2 FISHWIRE).
The manual states that 2 people may be required to ease installation. If you are hesitant to undertake this task on your own, CURT recommends contacting an authorized CURT installer for additional assistance. You can also call technical support at 1-877-287-8634.
Professional installation time is 35 minutes. Novice DIY installation time is 70 minutes. Actual time may vary depending on your experience and familiarity with the vehicle.
The manual does not mention disconnecting the battery as part of the installation procedure.
Yes. The first installation step is to lower the exhaust by removing 5 rear rubber isolators. The manual notes that you must support the exhaust as required during this step. If needed to access outside hangers, you must also remove plastic underbody panels by removing plastic fittings (7 per side). After the hitch is installed and torqued, you must reinstall the exhaust and underbody panels.
No drilling is required. However, the installation does require cutting a hole in the heat shield, enlarging existing access holes on both sides of the frame to allow 1/2" fasteners to pass through, and trimming a 1" hole on the dimple on both the right and left sides. These modifications are performed using a die grinder and aviator shears.
Yes. You must remove the heat shield by removing 4 small screws with a 10mm socket, then cut a hole in the heat shield as shown in the installation diagram. After fishwiring the hardware into position, you reinstall the heat shield with 3 of the fasteners, leaving out the one between the mounting holes. The heat shield will be sandwiched between the hitch and vehicle frame rails.
Fishwiring is the process of threading the 1/2" hardware (bolts, nuts, spacers, and fishwire) through the access holes in the frame rails into position on both sides of the vehicle. The fishwire is used to guide the hardware through the enlarged access holes before the hitch is raised into position.
All 1/2" fasteners must be torqued to 110 lb-ft. This is done after the hitch is raised into position and before the exhaust and underbody panels are reinstalled.
CURT 11408 is designed for use with ballmount #45521. Euro mount options are also available: #45571 (1 7/8" ball) or #45572 (2" ball).
Periodically check the receiver hitch to ensure that all fasteners are tight and that all structural components are sound. The manual does not specify a retorque interval, but recommends regular inspection as part of ongoing vehicle maintenance.
Safety glasses must be worn at all times while installing this product. The exhaust must be supported as required during the lowering step. Before you begin installation, read all instructions thoroughly. If you are hesitant to undertake this task on your own, contact an authorized CURT installer.
CURT Manufacturing LLC. warrants this product to be free of defects in material and/or workmanship at the time of retail purchase by the original purchaser. If the product is found to be defective, CURT may repair or replace the product at their option when the product is returned, prepaid, with proof of purchase. Alteration to, misuse of, or improper installation of this product voids the warranty. CURT's liability is limited to repair or replacement of products found to be defective, and specifically excludes liability for incidental or consequential loss or damage.
Yes, if you have a 2015-present WRX/WRX STI or Impreza sedan, or a 2012-2014 Impreza sedan (excluding WRX). Check your model year and body style against the manual's application list.
Professional: 35 minutes. Novice DIY: 70 minutes. Two people may be required.
All 1/2" fasteners must be torqued to 110 lb-ft after the hitch is raised into position.
Only with CURT 18050 stabilizing straps. Non-trailer loads without proper support will void the warranty.
Yes, part 56259 is designed for Subaru Impreza sedans with 2.0i engine in all trims. It is also compatible with Subaru WRX models. Verify your vehicle matches these specifications before purchasing.
Yes, the 56259 custom wiring harness is compatible with Subaru WRX models.
The signal circuits are rated for 3.0 amps per side, and the tail/running circuits are rated for 6.0 amps total. The battery connection must be fuse-protected with a 10-amp maximum fuse. Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower.
You will need: flat blade screwdriver, panel trim removal tool, wire stripper, wire crimper, ratchet, 10mm socket, and cutting tool.
Yes, you must disconnect the negative battery terminal before beginning installation. This is the first step in the installation process.
The wiring connection points are located behind the taillight housings inside the trunk. The driver side connection point (P3) is behind the driver side taillight housing, and the passenger side connection point (P4) is behind the passenger side taillight housing.
The custom wiring harness end with the yellow wire connects to the driver side taillight connectors. The harness end with the green wire connects to the passenger side taillight connectors.
Drilling may be required for the grounding point. You will need to locate an existing screw with nut in the vehicle frame near the taillight connector. If no suitable existing screw is available, you must drill a 3/32" pilot hole for the provided grounding screw. Before drilling, check for miscellaneous items that may be hidden behind or under any surface to avoid damage and personal injury.
The white wire is the ground wire. It must be secured using the ring terminal and provided screw to a suitable grounding point near the taillight connector, such as an existing screw with nut in the vehicle frame or a newly drilled 3/32" pilot hole.
The battery connection must be fuse-protected with a 10-amp maximum fuse. Exceeding this fuse rating can cause loss of warranty, overheating, and potential fire.
Locate a flat spot inside the vehicle near the taillight and adhere the black converter box using the provided double-sided tape.
When in use, route the 4-flat to the center of the vehicle and out of the trunk. When not in use, roll it up and store in a convenient, out-of-the-way location inside the trunk. Secure any loose wires with the provided cable ties.
After installation, reinstall all items removed during the install and reconnect the negative battery terminal. Install the provided 4-flat dust cover to prevent corrosion. Test the wiring harness for proper function by using a test light or connecting a properly wired trailer.
Do not exceed the product rating or the tow vehicle lamp load rating, whichever is lower. Exceeding either rating can cause loss of warranty, overheating, and potential fire. Consult your vehicle owner's manual or contact the vehicle manufacturer for your specific tow vehicle lamp load rating.
Remove the fasteners securing the rear scuff panel, then pull out on the bottom and then up to remove it. Take care not to damage the alignment tabs on the backside of the panel.
Pull back on the felt trunk liner to locate the vehicle taillight wiring harness connectors. Separate the connectors from the taillight housing, taking care not to damage the locking tabs.
Insert the custom wiring harness end (yellow wire for driver side, green wire for passenger side) between the separated vehicle taillight connectors. Make sure the connectors are fully inserted with locking tabs in place.
Yes, the 56259 is designed for Subaru Impreza sedans (2.0i all trims) and Subaru WRX models.
Flat blade screwdriver, panel trim removal tool, wire stripper, wire crimper, ratchet, 10mm socket, and cutting tool.
Yes, disconnect the negative battery terminal before starting installation.
Drilling may be required for the grounding point if an existing screw is not available. You would drill a 3/32" pilot hole for the provided grounding screw.
A 10-amp maximum fuse is required for the battery connection. Do not exceed this rating.
Signal circuits: 3.0 amps per side. Tail/running circuits: 6.0 amps total. Do not exceed the product rating or tow vehicle lamp load rating, whichever is lower.
Test for proper function by using a test light or connecting a properly wired trailer.
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