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Bulldog
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Quality Products
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BULLDOG Velocity Series High Speed Jack is designed to be fast, powerful, and easy to install. Our proprietary high-speed system offers up to 12,000 lbs. of fully powered lift capacity per leg
| BRAND: | BULLDOG |
| PART NUMBER: | 185400 |
| WARRANTY: | LIMITED 5 YEAR WARRANTY |
| WEIGHT: | 102 LBS |
| CAPACITY: | 12,000 LBS. |
| TRAVEL: | 24 IN. |
| HARDWARE INCLUDED: | NO |
| RETRACTED: | 27.375 IN. |
| SPEEDY LIFT: | NO |
| EXTENDED: | 39.875 IN. |
| COLOR: | BLACK |
| ATTACHED WHEELS: | NO |
| MATERIAL: | STEEL |
| FOOT WIDTH: | 9.7 IN. |
| FOOT LENGTH: | 10 IN. |
| CYLINDER DIAMETER: | 5 IN. SQ. |
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® Velocity Series™ High Speed Jack: Features & Benefits
The Bulldog® Velocity Series™ Jack is an electric trailer jack that raises and lowers trailers on hitch balls. It features a sealed, maintenance-free motor powered by the trailer battery, a toggle switch for extend/retract operation, and a manual override port for emergency operation if power is lost. The jack is designed for vertical loading only.
Yes, the jack can be installed on aluminum trailers. However, it is recommended to use isolation pads between the contact points of the jack and trailer (including hardware) to reduce galvanic corrosion.
You must use either Option 1 or Option 2. Option 1 requires a minimum of four (4) ½" grade 5 fasteners, with one fastener on each side of the two mounting plates. Option 2 requires a minimum of four (4) U-bolts, utilizing a total of eight holes on the mounting plates (two on the upper section and two on the lower). Both options must be torqued to 50 ft-lbs.
The manual specifies that a 3/4" hex socket is required for the manual override port. For mounting, you will need tools appropriate to tighten either ½" grade 5 fasteners or U-bolts to 50 ft-lbs torque. The manual does not specify other tools required for installation.
Yes. The manual states: "To avoid accidental shock and/or damage to the electrical system, disconnect the battery ground cable before installation."
Support the trailer by connecting the coupler to the towing vehicle or by using jack stands. Chock (block) the wheels of the trailer to prevent rolling.
The jack must be attached directly to the trailer frame. When considering the mount location, ensure you have adequate ground clearance when the jack is fully retracted. Inadequate ground clearance may result in property damage.
Connect the battery leads directly to the trailer battery: red lead to the positive terminal post of the battery, black lead to the negative terminal post of the battery. Vehicle wiring will not provide adequate amperage for this product. Secure the battery leads with cable-ties, wire loom, or similar fasteners.
Route the remote control wiring pigtail from your desired location to the connector port located on the side of the motor cover. Firmly connect the remote pigtail to the connector port. Secure the remote wiring pigtail with cable-ties, wire loom, or similar fasteners to ensure there will not be any chaffing. Use silicone-based, dielectric grease on the connection between the remote and power head.
All mounting fasteners must be torqued to 50 ft-lbs. This applies to both Option 1 (½" grade 5 fasteners) and Option 2 (U-bolts).
No. The manual explicitly states: "Vehicle wiring will not provide adequate amperage for this product." You must connect the battery leads directly to the trailer battery.
The maximum rated capacity is stamped on the product or shown on decals. Refer to these markings on your specific jack. Never exceed the maximum rated capacity. If uncertain about the capacity, contact Cequent Performance Products at 800-604-9466 or www.cequentperformanceproducts.com.
Never position any part of your body under or on the path of any portion of the jack or the load being supported or moved. Do not allow children to play on or around the jack or the load. Secure the load, vehicle and trailer from rolling by blocking the wheels when operating the jack or coupling the trailer. The jack is designed for vertical loading only; avoid excessive side forces as they may cause jack failure.
No. If the product has an extension leg, never attempt to adjust it when the jack is under load.
Ensure all connections are tight and free of corrosion. Verify that the jack is properly grounded with the coupler (metal-to-metal contact). Make sure the trailer battery is fully charged before use.
The motor is sealed and maintenance-free. However, you must maintain the electrical system including the battery and charger (not included). Periodically check mounting hardware for proper torque and tighten if necessary. Ensure all connections are tight and free of corrosion. Keep the jack properly grounded with the coupler (metal-to-metal contact). Ensure the battery is fully charged before use. If necessary, wash with mild soap and water and rinse thoroughly. Do not direct a high-pressure spray at the jack.
The manual states to "periodically check mounting hardware for proper torque and tighten if necessary." A specific interval is not provided in the manual.
The jack has a manual override feature. Remove the cap on top of the plastic cover over the manual override port. Insert a 3/4" hex socket and crank clockwise to extend the jack or counterclockwise to retract the jack.
Before operating, ensure the trailer battery is fully charged and the trailer wheels are chocked. To raise the trailer off the hitch ball, open the coupler and push the toggle switch in the "EXT" direction to extend the jack. To lower the trailer onto the hitch ball, push the toggle switch in the "RET" direction to retract the jack.
The jack includes: the jack assembly with motor, remote control, wiring pigtail, and toggle switch. The battery charger is not included and must be obtained separately.
Yes. If hard mounting the remote, identify a suitable location and secure the remote mount bracket with hardware of your choice.
Always replace bent, broken, or worn parts before using the jack. Do not operate the jack with damaged components.
Cequent Performance Products warrants the Bulldog® Velocity Series™ Jack to be free from defects in material and workmanship for five years from the date of purchase, provided installation and use are in accordance with the product instructions. The warranty covers the original consumer purchaser only and is not transferable. The warranty does not cover normal wear and tear, damage from abuse, neglect, misuse, accidents, misapplication, overloading, improper installation, improper maintenance, or product alterations made by anyone other than the manufacturer.
Use only Cequent Trailer Products' parts or parts of equal quality for repair. Replacement parts are available through Cequent Performance Products' Customer Service Department at 1-715-693-1700 or 1-800-604-9466. Please specify the product model number (F3920-00). You can also visit www.cequentperformanceproducts.com for additional details.
Yes, it fits aluminum trailers. Use isolation pads between the jack and trailer to reduce galvanic corrosion.
Either four ½" grade 5 bolts or four U-bolts, torqued to 50 ft-lbs. Isolation pads recommended for aluminum trailers.
No. You must connect directly to the trailer battery. Vehicle wiring does not provide adequate amperage.
All mounting fasteners must be torqued to 50 ft-lbs, whether using ½" grade 5 bolts or U-bolts.
Use the manual override: remove the cap on the plastic cover, insert a 3/4" hex socket, and crank clockwise to extend or counterclockwise to retract.
First, ensure the trailer battery is fully charged. The manual states to "make sure the battery is fully charged prior to use." If the battery is fully charged and the jack still does not respond, check that all electrical connections are tight and free of corrosion. Verify that the remote control wiring pigtail is firmly connected to the connector port on the motor cover.
Check that the trailer battery is fully charged. Ensure all electrical connections are tight and free of corrosion. Verify that the jack is properly grounded with the coupler (metal-to-metal contact). If the jack still does not operate smoothly, the motor may require service. Contact Cequent Performance Products at 1-800-604-9466 for assistance.
If necessary, wash the jack with mild soap and water and rinse thoroughly. Do not direct a high-pressure spray at the jack, as this may damage the sealed motor assembly.
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