Bulldog BX1 Gooseneck Coupler, 2-5/16 in. Diameter, 25,000 lbs. Capacity, Round BD1289020300Bulldog$200.80Out of Stock
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The BULLDOG BX1 coupler is the result of generations of design expertise and field experience. It incorporates innovative features that revolutionize the benefits available from a gooseneck coupler.
| BRAND: | BULLDOG |
| PART NUMBER: | 1289130300 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 58.6 LBS |
| CAPACITY: | 25,000 LBS. |
| BALL DIAMETER: | 2.313 IN. |
| MATERIAL: | STEEL |
| HITCH CLASS: | V |
| SAFETY CHAINS INCLUDED: | NO |
Founded in 1920, Bulldog has become the standard for heavy-duty trailer connection hardware in agricultural, military and utility service. The line covers gooseneck hitches and couplers, A-frame and channel-mount trailer couplers with the Wedge-Latch mechanism, and heavy-duty jacks, built for unmatched strength, reliability and safety under demanding loads.
Bulldog was founded in 1920 and has spent more than a century supplying the connection hardware that heavy trailers depend on. Its market has always been the demanding end: agricultural, military and utility applications where a coupler failure is not an inconvenience but a serious incident. The brand summarises its position as Tough and Tested, and it sits within the Horizon Global towing group alongside Reese, Draw-Tite, Fulton, Tekonsha, Bargman and Wesbar.
Gooseneck equipment is the brand's signature. Gooseneck hitches mount in the truck bed over the rear axle, which places the load where the chassis can carry it properly and allows far tighter turning than a receiver hitch permits. Matching gooseneck couplers attach at the trailer end, in round tube and square configurations across the capacity range used by livestock, equipment and flatbed trailers.
The conventional trailer coupler range is built around the Wedge-Latch mechanism, which uses a wedge to take up wear between coupler and ball rather than relying on a fixed clamp that loosens over time. That matters on a trailer accumulating hard miles, where slack in the coupling shows up as noise and shock loading. Couplers are offered in A-frame form for standard tongues and in channel-mount form for straight tongue and fabricated frames, with adjustable channel versions that let a coupler be positioned to suit the tongue height.
Heavy-duty jacks complete the line, sized for the tongue weights that gooseneck and equipment trailers generate. Across the range the emphasis is consistent: forged and heavy-section components, load ratings backed by testing, and hardware specified for agricultural, military and heavy-duty commercial use rather than occasional recreational towing.
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BULLDOG® BX1 Gooseneck Coupler
The Bulldog BX1 is a gooseneck coupler designed to couple a trailer to a towing vehicle via a 2 5/16" hitch ball. It features an inner tube that retracts and extends, a load bearing pin for rated load support, and a latch mechanism with handle. The coupler is rated according to SAE J2638 and is permanently welded to the trailer frame.
The maximum extension is 8" measured as the difference between the fully retracted and fully extended positions. Do not exceed this limit. Only couplers with properly installed load bearing pins and square adjustable gooseneck couplers extend within this range.
Use only a 2 5/16" hitch ball rated equal to or greater than the capacity of the coupler. Never exceed the maximum rated capacity. Refer to the stamped markings or decals on the product to obtain the rated capacity. If uncertain, contact Cequent Performance Products at 1-800-521-0510 or www.cequentgroup.com.
The coupler can be installed on gooseneck trailers, but installation requires permanent welding by an AWS certified welder. The outer tube must be rigidly attached to the trailer with gussets extending down to within 3" of the bottom of the outer tube. Weld size, gusseting requirements, coupler height, and orientation depend on trailer design and customer requirements. Before installation, confirm there will be no interference from the tow vehicle, tongue, ground, or other mounted accessories in both extended and retracted positions.
Before installation, confirm that there will be no interference from the tow vehicle, tongue, ground, and any other mounted accessories while stationary or in motion. Check for interference in both extended and retracted positions. The set bolts must face the towing vehicle. After installation is complete, check for interference again. Verify that the coupler will reach the towing vehicle to couple with the hitch ball while the load bearing pin is installed properly.
1. Block trailer wheels. 2. Align hitch ball beneath coupler. 3. Set coupler into open position by lifting up on the handle and slide the locking plate into the detent. 4. Lower the trailer onto the hitch ball. 5. Visually check that the hitch ball is fully seated in the coupler. 6. Slide the locking plate over and place handle down into the closed position. When using a recessed ball, check that handle and locking plates are clear of interference with safety chains and D-rings. 7. Insert optional theft deterrent lock through hole in fixed plate.
1. Block trailer wheels. 2. Remove lock (if equipped) and set the handle into the open position. 3. Slide the locking plate into the open position and raise the trailer from the hitch ball.
Yes, welding is required. The outer tube must be rigidly attached to the trailer by welding gussets as low as possible to the outer tube. All welding must be performed by an AWS certified welder. Avoid heat damage to the coupler during welding, and do not weld over or near any holes or hardware on the coupler. Weld size and gusseting requirements depend on trailer design and customer requirements.
All hardware must be torqued to 125 ft-lbs (172 N.m) minimum. Periodically check for proper torque and tighten if necessary. Check for wear on the inner tube if retightening is needed. This includes set bolts and jam nuts.
The load bearing pin is a component that must be fully inserted through both the inner and outer tubes in order for the coupler to support its rated load. The retaining pin must also be installed. Do not tow unless the load bearing pin is fully inserted and the retaining pin is installed. If equipped with a load bearing pin, it must be fully inserted through both tubes for the coupler to support its rated load according to SAE J2638.
Weigh your trailer plus added load. Do not exceed the lesser of the coupler, hitch, vehicle, ball, or trailer weight ratings (including load). Refer to the stamped markings or decals on the product to obtain the rated capacity. If uncertain, contact Cequent Performance Products at 1-800-521-0510 or www.cequentgroup.com.
Before towing: 1. Check vehicle, hitch ball, and coupler for signs of wear or damage. Ensure that the coupler opens, closes, and the handle springs closed when released. 2. Always replace bent, broken, or worn parts before using this product. 3. Ensure that the hitch ball is fully seated in the coupler ball pocket and the latch is closed. 4. Make sure that the trailer safety chains are properly connected to the towing vehicle and trailer. 5. Make sure that all trailer lighting is hooked up and working properly. Always secure load, vehicle, and trailer (by blocking wheels) before latching or unlatching the coupler.
After installation is complete: 1. Check for interference again in both extended and retracted positions. 2. Verify that the coupler operation has not been impaired in any way. Do not use the coupler if its operation has been impaired. 3. After assembly and painting, but prior to being used, affix any enclosed labels to the coupler and remove premask. 4. Ensure that the coupler remains vertical after installation to ensure proper operation.
The following procedures should be performed at least annually: 1. Check hardware torque (all hardware must be torqued to 125 ft-lbs minimum). 2. Grease all fittings and ball pocket. 3. Inspect retaining pin; replace if necessary. Keep the ball pocket, latch, and handle clean. Use only Cequent Performance Products' parts or parts of equal quality for repair. Replacement parts are available through Cequent Performance Products' Customer Service Department at 1-800-521-0510.
Yes, a handle repair kit is available to replace worn or malfunctioning parts. The kit includes the handle assembly, locking cam, groove pin, bushing, and torsion spring. Required tools are a hammer and 5/32" punch. Contact Cequent Performance Products' Customer Service Department at 1-800-521-0510 to order. Please specify the product model number.
The BX1 is a gooseneck coupler that must be permanently welded to the trailer frame by an AWS certified welder. Before installation, confirm no interference with the tow vehicle, tongue, ground, or accessories in extended and retracted positions. Weld size and gusseting depend on your trailer design. Contact Cequent at 1-800-521-0510 for fitment confirmation.
Installation requires welding equipment and an AWS certified welder. No other specific tools are listed in the manual for basic installation. For handle repair kit installation, a hammer and 5/32" punch are required.
The manual does not specify drilling requirements for basic coupler installation. Welding is required to attach the outer tube to the trailer with gussets. All welding must be performed by an AWS certified welder.
All hardware, including set bolts and jam nuts, must be torqued to 125 ft-lbs (172 N.m) minimum. Periodically check for proper torque and tighten if necessary.
No. Do not tow unless the load bearing pin is fully inserted through both the inner and outer tubes and the retaining pin is installed. The coupler cannot support its rated load without the load bearing pin fully inserted.
Do not exceed 8" maximum extension from the fully retracted position. Measure extension as the difference between fully retracted and fully extended positions.
Perform the following procedures at least annually: check hardware torque (125 ft-lbs minimum), grease all fittings and ball pocket, and inspect the retaining pin (replace if necessary). Keep the ball pocket, latch, and handle clean.
The handle should spring closed when released. If it does not, this indicates a malfunction. Do not use the coupler if its operation has been impaired. Check the coupler for signs of wear or damage. A handle repair kit is available to replace worn or malfunctioning parts. Contact Cequent Performance Products at 1-800-521-0510 to order the kit.
Do not use the coupler if its operation has been impaired in any way. After installation, check to make sure that coupler operation has not been impaired. Verify that the coupler opens, closes, and the handle springs closed when released. If operation is impaired, do not tow. Contact Cequent Performance Products at 1-800-521-0510 for service or replacement.
Visually check that the hitch ball is fully seated in the coupler ball pocket before towing. If the ball is not fully seated, do not tow. Ensure that the hitch ball is fully seated in the coupler ball pocket and the latch is closed. If the ball will not seat properly, check that the ball is the correct size (2 5/16") and rating, and that the coupler is not damaged. Contact Cequent Performance Products at 1-800-521-0510 if the problem persists.
Tighten the set bolts and jam nuts to minimize vibrations in the coupler during towing. All hardware must be torqued to 125 ft-lbs minimum. Periodically check for proper torque and tighten if necessary. Check for wear on the inner tube if retightening is needed. If hardware repeatedly loosens, inspect the coupler and inner tube for damage or wear.
| Part Number | Description | Capacity (lbs.) | Retracted Height (in.) | Extended Height (in.) | Adjustment (in.) | Ball Size (in.) |
|---|---|---|---|---|---|---|
| 1289130300 | BX1 Coupler, 4.5 in. x 20 in. Square Outer Tube, 4 in. x 30.75 in. Square Inner Tube, with BX1 Cast Coupler Head, 3/4 in. Load Bearing Bolt, (2) Set Bolts, Raw, Labels Applied | 25,000 | 38.00 | 38.80 | 8.00 | 2-5/16 |
| 1289140300 | BX1 Coupler, 4.5 in. x 20 in. Square Outer Tube, 4 in. x 30.75 in. Square Inner Tube, with BX1 Cast Coupler Head, 3/4 in. Load Bearing Bolt, (2) Set Bolts, Raw, Labels Applied | 30,000 | 38.00 | 38.80 | 8.00 | 2-5/16 |
| 1289200300 | BX1 Coupler, 4.5 in. x 20 in. Square Outer Tube, 4 in. x 18.4 in. Square Inner Tube, with BX1 Cast Coupler Head, 3/4 in. Load Bearing Bolt, (4) Set Bolts, (2) Belly Bands, Raw, Labels Applied | 40,000 | 22.00 | 24.60 | 2.60 | 3 |
| 1289210300 | BX1 Coupler, 4 in. x 22.75 in. Square Inner Tube Only, with BX1 Cast Coupler Head, Raw, Labels Loose | 25,000 | - | - | 8.00 | 2-2/16 |
| 0233120300 | Square Outer Tube, Weld On, 20 in. Length, 4-1/2 in. Tube, with Hex Head Bolt Hole, Dual Set Bolts and Labels, 20.6 lbs. |
George
The staff was able to quickly assist me with locating the correct product I needed. Shipping was really fast. Item arrived in 2 days. Will be using TowUniverse again!!
May 22, 2023
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