Manufacturer | CURT |
---|---|
Place of Business | DFW AIRPORT, TX, 75261 US |
Brand | CURT |
Model | Straight Coupler |
Product Dimensions | 27.31 x 11.68 x 10.16 cm; 1.81 kg |
Item model number | 25135 |
Is discontinued by manufacturer | Yes |
Exterior | CLEAR ZINC |
Manufacturer part number | 25135 |
OEM part number | 25135 |
Item Weight | 1.81 kg |
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CURT 25135 Posi-Lock Coupler
Purchase options and add-ons
Brand | CURT |
Item weight | 1.81 kg |
Vehicle service type | Marine-Personal-Craft, Trailer |
Material | Alloy Steel |
Finish type | CLEAR ZINC |
About this item
- SECURE COUPLING. The posi-lock latch mechanism of this trailer tongue coupler accepts a safety pin or coupler lock for enhanced security
- PRECISE FIT. This trailer coupler is designed to mount onto a 2-1/2-inch wide trailer tongue beam and couple to any standard 2-inch diameter trailer ball
- EASILY ADJUSTABLE. Equipped with a posi-lock spring and adjustable nut on the inside, this trailer hitch coupler can easily be adjusted to ensure a snug fit on the trailer ball
- HIGH-STRENGTH. Constructed from punched, die-cut steel, this trailer ball coupler is rated as a class 2 trailer coupler and has a capacity of 3,500 lbs. gross trailer weight and 500 lbs. tongue weight
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Top Brand: CURT
From the manufacturer

Wherever your work or play takes you
CURT offers custom trailer hitches, electrical products and a complete line of towing accessories to get you there with confidence and enjoy every mile of the journey.

Towing accessories to fit your lifestyle
Hitches, trailer wiring, cargo carriers and more!
CURT offers a complete line of towing accessories to let you fully enjoy your passion!
With everything from custom trailer hitches and trailer wiring to 5th wheel hitches and cargo carriers, we have the towing equipment you need to make the most of each adventure.
Whether you're working, playing or doing a little of both, CURT towing products enable you and your crew to make memories that will last a lifetime.
A complete line of towing products
- Trailer hitches
- 5th wheel hitches
- Gooseneck hitches
- Towing electrical
- Towing accessories
- Weight distribution
- Trailer parts and accessories
- Cargo management
Basic towing components
Custom hitches
A trailer hitch receiver is the starting point for most people looking to tow with their vehicle. CURT offers over 1,000 different custom hitch models to provide a perfect, factory-like fit on most vehicles on the road today. Our custom hitches provide a standard hitch receiver to mount a variety of towing accessories.
Vehicle-trailer wiring
The next step in equipping your vehicle for towing is to add a trailer wiring harness. Like our hitches, CURT custom wiring is made vehicle-specific for each make and model. Virtually all of our custom vehicle-trailer wiring harnesses install using existing factory connectors on the vehicle for a plug-and-play connection. No splicing necessary!
Ball mounts
With a custom trailer hitch receiver installed on your vehicle, a variety of ball mount options can be installed as needed. We offer loaded ball mounts with a trailer ball already torqued in place, as well as adjustable ball mounts, multi-ball mounts, tow hooks and more. A ball mount can be secured into the receiver using one of our hitch pins or hitch locks.
Cargo management
To add cargo space to your vehicle, CURT offers a number of cargo management accessories. Our cargo carriers are available in a convenient, use-as-needed hitch-mounted design, as well as a roof rack option. We also offer bike racks, cargo bags, cargo nets and ratchet straps for additional item security.
Heavy-duty towing equipment
5th wheel hitches
For heavy-duty towing of an RV or travel trailer with your pickup truck, CURT has a wide array of 5th wheel hitch options. 5th wheel hitches are available in capacities up to 25,000 lbs. and in various series, each with own unique set of features and benefits. To install a 5th wheel hitch in your pickup truck bed, CURT offers traditional 5th wheel rails and brackets, as well as puck system options and gooseneck adapters.
Gooseneck hitches
For towing heavy-duty trailers around the farm or out to the construction site, CURT gooseneck hitches are a highly dependable extension of your truck. We offer puck system gooseneck hitch kits to accommodate trucks with the factory towing prep package. We also offer original-equipment-style gooseneck hitches for select applications, as well as traditional gooseneck hitches and brackets, such as our original Double Lock.
Trailer brake controllers
CURT offers several different electrical trailer brake controller options to perfectly suit your towing setup and lifestyle. Our Echo mobile trailer brake controller is particularly unique, featuring a Bluetooth connection that links to your smartphone and provides highly responsive braking with your Apple or Android device as the interface. It easily plugs in with no tools or extra wires needed. We also offer our factory-like Spectrum and traditional TriFlex.
Specialized towing accessories
Adjustable channel mounts
To give your vehicle greater capability for towing a variety of trailers, CURT adjustable trailer hitch ball mounts provide the answer. This versatile ball hitch comes in standard hitch receiver sizes and provides flexible vertical adjustment to ensure level towing, even with large, lifted trucks and SUVs.
Weight distribution hitches
Give yourself more control over your vehicle and trailer with a CURT weight distribution hitch. This receiver hitch attachment helps level the vehicle-trailer combination for a smoother ride. Our TruTrack weight distribution hitch is particularly unique, featuring integrated trailer sway control.
Pintle hitches
These heavy-duty hitches are perfect for agriculture, construction and military towing. We offer pintle hitches, pintle hooks, ball and pintle hitch combinations, as well as channel-mount pintle hitches for an adjustable option. We also carry high-strength lunette rings for a solid connection to the trailer.
Ratchet straps
Keep your cargo fully secure in your truck bed or trailer with a set of CURT ratchet straps. These cargo tie-down straps come with heavy-duty ratcheting mechanisms and are available in wide variety of capacities, lengths, hook types and colors.
Product description
CURT 25135 Posi-Lock Coupler
Product information
Technical Details
Additional Information
ASIN | B0007LZGXS |
---|---|
Customer Reviews |
4.6 out of 5 stars |
鶹 Rank |
|
Date First Available | Aug. 13 2012 |
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Customer reviews
Customers say
Customers like the build quality and fit of the tow hitch. They mention it's heavy-duty and well-built.
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Customers are satisfied with the fit of the tow hitch. They mention it's perfect for converting lawn tractor trailers from pin to ball.
"Perfect fit, used to convert lawn tractor trailer from pin to ball." Read more
"Fitted perfectly. I was was constructed with no flaws" Read more
"...I also found that it was pre-adjusted fit a 2" ball tightly. I'm not sure if this was a coincidence but it was a plus...." Read more
Top reviews from Canada
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- Reviewed in Canada on May 19, 2023Verified PurchasePerfect fit, used to convert lawn tractor trailer from pin to ball.
- Reviewed in Canada on December 10, 2017Verified PurchaseFitted perfectly. I was was constructed with no flaws
- Reviewed in Canada on August 25, 2023Verified PurchaseWorks great on my lawn sweeper .
- Reviewed in Canada on April 2, 2019Verified PurchaseIt was a perfect replacement for my trailer. I also found that it was pre-adjusted fit a 2" ball tightly. I'm not sure if this was a coincidence but it was a plus. I sometimes struggled to get the old coupler on and off of the ball even when it was new. This one works much better.
- Reviewed in Canada on August 22, 2019Verified PurchaseJust as advertised.
- Reviewed in Canada on April 16, 2021Verified PurchaseWould buy again
- Reviewed in Canada on December 16, 2017Verified Purchasethank you exactly as described perfect for my trailer
- Reviewed in Canada on May 26, 2017Verified Purchasejust what I was looking for at a good price.
Top reviews from other countries
- TeresaReviewed in the United States on July 26, 2025
5.0 out of 5 stars best bang for you buck !!!!
Verified PurchaseI'm very happy with my purchase . lately my purchases from amazon have had to be returned because cheaply made item of false calms but this is one buy i'm happy with it fits perfectly on my trailer. easy installation . it looks great you want be disappointed
- Nathan McCannReviewed in the United States on August 11, 2025
4.0 out of 5 stars Hard to find a 2.5
Verified PurchaseI like that it's a 2.5", seems like that's hard to find. It doesn't like to drop on the ball if it's towards the back of the socket, haven't experienced that before but it's not a huge thing to deal with.
Product summary presents key product information
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Product Summary: CURT 25135 Posi-Lock Coupler
From CURT
About this Item
- SECURE COUPLING. The posi-lock latch mechanism of this trailer tongue coupler accepts a safety pin or coupler lock for enhanced security
- PRECISE FIT. This trailer coupler is designed to mount onto a 2-1/2-inch wide trailer tongue beam and couple to any standard 2-inch diameter trailer ball
- EASILY ADJUSTABLE. Equipped with a posi-lock spring and adjustable nut on the inside, this trailer hitch coupler can easily be adjusted to ensure a snug fit on the trailer ball
- HIGH-STRENGTH. Constructed from punched, die-cut steel, this trailer ball coupler is rated as a class 2 trailer coupler and has a capacity of 3,500 lbs. gross trailer weight and 500 lbs. tongue weight
Product description
Feedback
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