{"product_id":"bw-continuum-weight-distribution-hitch-load-bar-unit-only-underslung-coupler-wdhl4511","title":"B\u0026W Continuum Weight Distribution Hitch Load Bar Unit Only, Underslung Coupler, 600-1,600 lb Tongue Weight (WDHL4511)","description":"\u003cp\u003eThis is the Continuum load bar unit ONLY. It is not a complete hitch and it will not go into your truck's receiver on its own. The complete kit is WDHK4501 with a 2\" shank or WDHK4503 with a 2.5\" shank, and a working Continuum also needs a head unit, which is the shank-and-ball half that mounts to the truck. What you are buying here is the expensive and clever half of the system: the tapered LITEFLEX composite spring bars that Hendrickson makes for B\u0026amp;W, the hydraulic hand pump with its pressure gauge, the cylinder and hoses, and the brackets that clamp to your trailer frame. This version is built for an underslung coupler, the style that hangs below the trailer's A-frame, and it includes the bracket that layout needs. Because the bars are composite rather than steel, this one unit covers the whole 600 lb to 1,600 lb tongue weight range, so changing what is in the trailer means a few more strokes of the handle rather than a different set of bars. Buy it on its own if you are moving a Continuum between two trucks that need different head units, or replacing a damaged unit; otherwise buy the complete kit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's Included:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eContinuum load bar unit, underslung coupler configuration\u003c\/li\u003e\n\u003cli\u003eTapered LITEFLEX composite spring bars, rated 600-1,600 lb tongue weight\u003c\/li\u003e\n\u003cli\u003eHydraulic hand pump with pressure gauge, needle valve and pressure relief valve\u003c\/li\u003e\n\u003cli\u003eHydraulic cylinder and DOT-approved hoses and fittings\u003c\/li\u003e\n\u003cli\u003eTrailer frame brackets and mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"embed-container\" style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/YDCp4nsG9Ps\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eThis Is the Load Bar Unit, Not a Hitch\u003c\/strong\u003e\u003cbr\u003eSold on its own as a service and configuration part. There is no shank, no head casting and no ball in this box, so nothing here goes into the truck. Pair it with a Continuum head unit (WDHH4500 or WDHH4502), or buy the complete kit (WDHK4501 with a 2\" shank or WDHK4503 with a 2.5\" shank) if you are starting from nothing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eComposite Spring Bars Covering 600 lb to 1,600 lb\u003c\/strong\u003e\u003cbr\u003eB\u0026amp;W went to Hendrickson, which builds suspensions for heavy trucks, for the tapered LITEFLEX bars. They are roughly five times more flexible than steel at similar strength and considerably lighter, which is why one set spans the whole tongue weight range instead of being sized to a band. They are corrosion resistant, so they are not a maintenance item.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Hydraulic Pump, Gauge and Cylinder\u003c\/strong\u003e\u003cbr\u003eThis is where the Continuum's setup lives. You pump the handle to move weight onto the truck's front axle and read the result off the gauge, then twist the needle valve to unload before you unhitch. The pump cartridge, needle valve, relief valve and gauge are all purpose-designed, it is a closed loop, and B\u0026amp;W tested it from -40°F to 150°F. Maximum pressure is around 3,000 lb with the relief valve set at 2,500 lb, so you cannot over-pump it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt for Underslung Couplers\u003c\/strong\u003e\u003cbr\u003eThis is the difference between the two load bar units, and it is the reason to get the choice right. This one is for an underslung coupler, the style that hangs below the trailer's A-frame, and it includes the bracket that layout needs. Look at your trailer's A-frame from the side before you order.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlways Loaded, So Sway Prevention Is Always Working\u003c\/strong\u003e\u003cbr\u003eBecause the bars stay under load rather than being latched and unlatched, the friction resistance is present from the first mile instead of arriving after the trailer has already started to move out of line. B\u0026amp;W's own testing on air casters found that several leading systems do not begin to resist until the trailer is 2 to 4 degrees off, which on a 25' trailer is several feet of lane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRemovable When You Do Not Need It\u003c\/strong\u003e\u003cbr\u003eThe spring bar assembly lifts off the head, so a small trailer that does not need weight distribution can be towed on the ball mount alone. You can also stow the assembly between the bottom of the trailer frame and the spring bar holder on the jack foot by raising the jack until it is snug.\u003c\/p\u003e\n\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;margin:8px 0 4px;border:1px solid #e6e6e6;border-radius:8px;\"\u003e\u003ctable style=\"display:table;width:100%;margin:0;border-collapse:separate;border-spacing:0;border:none;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"background:#ba232a;color:#ffffff;text-align:left;padding:12px 14px;font-weight:700;border:none;\"\u003eWhat Has To Match\u003c\/th\u003e\n\u003cth style=\"background:#ba232a;color:#ffffff;text-align:left;padding:12px 14px;font-weight:700;border:none;\"\u003eThis Load Bar Unit\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eTrailer coupler style\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e Underslung\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;font-weight:600;\"\u003eTrailer tongue weight\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e 600 lb to 1,600 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eTrailer gross weight\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e Up to 16,000 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;font-weight:600;\"\u003eTrailer frame\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e 5\" or 6\" with no center rail; 4\" or 7\" with different cylinder mount hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eClear frame needed ahead of the brackets\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e 2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;font-weight:600;\"\u003eHead unit required\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#f7f7f7;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e WDHH4500 or WDHH4502\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;font-weight:600;\"\u003eComplete kit equivalents\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border:none;border-bottom:1px solid #ececec;background:#ffffff;\"\u003e\n\u003cspan style=\"color:#b25e00;font-weight:700;\"\u003e●\u003c\/span\u003e WDHK4501 with a 2\" shank or WDHK4503 with a 2.5\" shank\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"background:#faf7f7;border-left:4px solid #ba232a;border-radius:0 8px 8px 0;padding:14px 16px;margin:12px 0;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eFit guidance:\u003c\/strong\u003e This is a component, so it fits the same trucks and trailers as the complete kit it belongs to. Nothing about this part is decided by your truck; the receiver size is the head unit's business. What this part decides is the trailer side: it is built for underslung couplers, it clamps to 5\" and 6\" frames without a center rail (4\" and 7\" frames need different cylinder mount hardware), and it needs 2\" of clear frame ahead of where the brackets land, so check for wiring, propane lines and battery boxes in that space. The complete hitch is rated to 16,000 lb gross trailer weight with tongue weight between 600 lb and 1,600 lb.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eB\u0026amp;W Part Number:\u003c\/b\u003e WDHL4511\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWhat This Is:\u003c\/b\u003e Continuum load bar unit only, a component of a complete Continuum kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eComplete Kit Part Numbers:\u003c\/b\u003e WDHK4501 with a 2\" shank or WDHK4503 with a 2.5\" shank\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHead Unit Required:\u003c\/b\u003e WDHH4500 or WDHH4502, depending on your receiver size\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTrailer Coupler Type:\u003c\/b\u003e Underslung\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSeries:\u003c\/b\u003e Continuum\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMax Gross Trailer Weight:\u003c\/b\u003e 16,000 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTongue Weight Range:\u003c\/b\u003e 600-1,600 lb, covered by one set of spring bars\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSpring Bars:\u003c\/b\u003e Tapered LITEFLEX composite, made for B\u0026amp;W by Hendrickson\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWeight Transfer:\u003c\/b\u003e Hydraulic hand pump with pressure gauge, operated from the driver's side\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSway Control:\u003c\/b\u003e Friction sway prevention, immediate and continuous because the bars stay loaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTrailer Frame Compatibility:\u003c\/b\u003e 5\" and 6\" frames without a center rail; 4\" and 7\" frames with longer or shorter cylinder mount hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eClearance Needed for Frame Brackets:\u003c\/b\u003e 2\" of clear frame ahead of the bracket location\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHydraulic System:\u003c\/b\u003e Closed loop, pressure relief set at 2,500 lb, tested from -40°F to 150°F\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Black powder coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eWarranty:\u003c\/b\u003e B\u0026amp;W Lifetime Exclusive Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMade In:\u003c\/b\u003e Made in the USA, built by B\u0026amp;W in Humboldt, Kansas\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShipping Weight:\u003c\/b\u003e About 67 lb, this component only\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUPC:\u003c\/b\u003e 843233011517\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eType:\u003c\/b\u003e Brackets bolt to the trailer A-frame; the assembly then pins to a Continuum head unit  ·  \u003cb\u003eTime:\u003c\/b\u003e About 30 minutes for the first setup  ·  \u003cb\u003eTools:\u003c\/b\u003e 9\/16\" wrench, tape measure  ·  \u003cb\u003eDifficulty:\u003c\/b\u003e Straightforward, DIY-friendly\u003c\/p\u003e\n\u003cp\u003eLevel the trailer, set the head unit's ball height to match, then mount the pump and cylinder to the trailer frame and pin the cylinder to the spring bar assembly. The bar assembly arrives pre-assembled. If you are fitting this to an existing head, re-check ball height and re-set the pump pressure rather than reusing an old setting. Work from B\u0026amp;W's Continuum installation manual, which covers the whole system.\u003c\/p\u003e\n\u003cp\u003eWatch the installation walkthrough:\u003c\/p\u003e\n\u003cdiv class=\"embed-container\" style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;max-width:100%;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/nxAG2RZKi8A\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;\" frameborder=\"0\" allowfullscreen\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch3\u003eWarranty, Shipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty.\u003c\/strong\u003e B\u0026amp;W covers this product with its Lifetime Exclusive Limited Warranty. B\u0026amp;W warrants its products to the original consumer purchaser, for as long as that purchaser owns the product, against defects in material and workmanship. The remedy is replacement, or repair or a full refund at B\u0026amp;W's option. Installation and removal labor, shipping costs, and damage caused by misuse, overloading, alteration or improper installation are not covered. Warranty service goes directly through B\u0026amp;W at 800-248-6564, which issues a return authorization before anything is sent back. B\u0026amp;W states that it does not authorize dealers or distributors to create any other warranty, so what is described here is B\u0026amp;W's own coverage and nothing has been added to it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping.\u003c\/strong\u003e This item ships free to the lower 48 states. Because it is an oversized item, it ships by freight and typically arrives in 3 to 7 business days.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInspect on delivery.\u003c\/strong\u003e Please inspect the packaging before signing. If you see any damage, note it on the delivery receipt and contact us right away, and we will make it right.\u003c\/p\u003e\n\u003ch3\u003eAbout B\u0026amp;W Trailer Hitches\u003c\/h3\u003e\n\u003cp\u003eB\u0026amp;W Trailer Hitches started in 1987 in a Humboldt, Kansas garage, where Roger Baker and Joe Works built the first Turnoverball gooseneck hitch. The idea was simple and nobody else had done it: a gooseneck ball that turns over and stores flush with the bed floor, so the truck bed goes back to being a truck bed the moment you unhook. That one product built the company, and B\u0026amp;W still makes its hitches in Humboldt, in a plant that has grown to about 600,000ft². The company has been 100% employee-owned since 2007, with roughly 500 employee-owners who have a stake in what comes off the line.\u003c\/p\u003e\n\u003cp\u003eThe testing story is worth knowing, because it is not how the rest of the industry does it. SAE J-2638, the standard for gooseneck and fifth-wheel hitches, is a recommended practice, and it is common to satisfy it with a fresh sample for each test. B\u0026amp;W runs a single hitch through all three 300,000-cycle dynamic tests and the six static tests, one after another, on the same unit. The Tow \u0026amp; Stow line is tested to SAE J-684. Every B\u0026amp;W-brand product is covered by the company's Lifetime Exclusive Limited Warranty to the original consumer, against defects in material and workmanship, for as long as that person owns it.\u003c\/p\u003e\n\u003cp\u003ePrestige Truck is an authorized B\u0026amp;W dealer. Every B\u0026amp;W product we ship is new, in the factory carton, and backed by B\u0026amp;W's own warranty and its US-based support team in Humboldt, Kansas.\u003c\/p\u003e","brand":"B\u0026W Trailer Hitches","offers":[{"title":"Default Title","offer_id":49106911789300,"sku":"WDHL4511","price":1085.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0805\/4784\/0244\/files\/bw-continuum-load-bar-unit-wdhl4511-parent-kit-wdhk4501-shown-complete.png?v=1786363688","url":"https:\/\/prestigetruck.com\/products\/bw-continuum-weight-distribution-hitch-load-bar-unit-only-underslung-coupler-wdhl4511","provider":"Prestige Truck","version":"1.0","type":"link"}