{"product_id":"curt-helux™-coil-spring-gooseneck-pin-box-5-000-lb-pin-weight-20-000-lb-gtw","title":"CURT - Helux Coil-Spring Gooseneck Pin Box - 5,000 lb. Pin Weight - 20,000 lb. GTW - Made in USA - SAE J2638 - #2024044579","description":"\u003cdiv style=\"font-size: 140%; font-weight: 100; margin-bottom: 20px; margin-top: -10px; line-height: 1.6;\"\u003eMaximum-Capacity Gooseneck Pin Box — Built for the Heaviest Fifth-Wheels on the Road\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #1d9bf0; padding: 16px; margin-bottom: 16px;\"\u003e\u003cstrong style=\"color: #1d9bf0;\"\u003e✓ ElkhartRVParts.com — Authorized CURT Dealer\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv style=\"background-color: #f3f4f6; border-left: 4px solid #10b981; padding: 16px; margin-bottom: 24px;\"\u003e\u003cstrong style=\"color: #10b981;\"\u003e✓ SAE J2638 Tested | Approved for Lippert RV Frames | Made in USA\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cp\u003eWhen you're towing a heavy fifth-wheel on a gooseneck hitch, your pin box takes constant punishment. Every road imperfection transfers directly through it into your RV's frame — and a rigid pin box does nothing to stop that energy. The CURT Helux Coil-Spring Pin Box (5,000 lb. version) is engineered to absorb that stress before it becomes structural damage. Its proprietary coil spring and shock absorber system reduces frame stress by up to 30% compared to rigid alternatives, delivering a measurably smoother ride for your rig, your cargo, and everyone inside.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5,000 lb. Pin Weight Capacity\u003c\/strong\u003e — The highest-capacity Helux gooseneck model. Full 20,000 lb. GTW rating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoil Spring + Shock Absorber Technology\u003c\/strong\u003e — Intercepts chucking and road vibration at the hitch connection. Energy dissipates as heat, not frame stress.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUp to 30% Less Frame Stress\u003c\/strong\u003e — Measured protection against the repetitive impacts that fatigue welds, crack frames, and loosen fasteners over time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeadroom Where It Counts\u003c\/strong\u003e — At 5,000 lb. capacity, you stay well within rating even with full water tanks, gear, and passengers — not running close to the edge.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto-Latching 2-5\/16\" Coupler\u003c\/strong\u003e — Fast, secure hookup every time. No fumbling with manual latches.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero Maintenance, Zero Break-In\u003c\/strong\u003e — Coil technology needs nothing ongoing. Tow full performance from day one.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLippert Frame Approved\u003c\/strong\u003e — Use on Lippert-framed trailers without voiding your frame warranty. Rhino Box bolt pattern compatible.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSAE J2638 Safety Tested\u003c\/strong\u003e — Meets industry coupling safety standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMade in USA\u003c\/strong\u003e — Black powder coat for long-term durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eStepping up to the 5,000 lb. Helux isn't just about the number — it's about margin. Even when your trailer is fully loaded, you're well within the pin weight rating rather than pushing the limits of a lower-capacity box. That headroom matters for long-term durability and for the occasional trip when you're carrying more than usual. The Helux suspension system performs consistently across the full weight range: absorbing the impacts that a rigid pin box would transmit directly to your frame, protecting structural welds and components from the kind of fatigue that shows up as expensive damage years down the road.\u003c\/p\u003e\n\n\u003cp\u003eInstallation follows the standard Rhino Box bolt pattern, compatible with Lippert-framed trailers across dozens of major RV brands. The auto-latching coupler makes hookup reliable and fast on every trip, and zero break-in means you leave the driveway after install and immediately tow at full performance. Ships approximately 200 lbs. via LTL freight.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 2024044579 | \u003cstrong\u003eUPC:\u003c\/strong\u003e 612314057962\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e CURT (a Lippert company)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Pin Weight:\u003c\/strong\u003e 5,000 lbs. | \u003cstrong\u003eMin Pin Weight:\u003c\/strong\u003e 2,850 lbs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGTW Rating:\u003c\/strong\u003e 20,000 lbs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoupler:\u003c\/strong\u003e 2-5\/16\" auto-latching gooseneck ball coupler\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt Pattern:\u003c\/strong\u003e Rhino Box compatible\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrame Approval:\u003c\/strong\u003e Lippert RV frames\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety Standard:\u003c\/strong\u003e SAE J2638\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black powder coat | \u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e ~200 lbs. (ships LTL freight)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's Included\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1× CURT Helux coil-spring gooseneck pin box assembly\u003c\/li\u003e\n  \u003cli\u003eMounting hardware, safety chains \u0026amp; installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠️ Freight Shipment:\u003c\/strong\u003e This item ships LTL (~200 lbs.). Freight delivery included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlso available:\u003c\/strong\u003e 4,300 lb. version (Part #2024044578). \u003ca href=\"\/en-ca\/products\/curt-helux-coil-spring-gooseneck-pin-box-4-300-lb-pin-weight-20-000-lb-gtw\"\u003eView →\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch2\u003eCompare CURT Helux Gooseneck Pin Boxes\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e5e7eb;min-width:500px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background-color:#dc2626;color:white;\"\u003e\n\u003cth style=\"padding:12px;text-align:left;border:1px solid #e5e7eb;white-space:nowrap;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;border:1px solid #e5e7eb;white-space:nowrap;\"\u003eMax Pin Weight\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;border:1px solid #e5e7eb;white-space:nowrap;\"\u003eMin Pin Weight\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;border:1px solid #e5e7eb;white-space:nowrap;\"\u003eGTW\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;border:1px solid #e5e7eb;white-space:nowrap;\"\u003eBest For\u003c\/th\u003e\n\u003cth style=\"padding:12px;text-align:left;border:1px solid #e5e7eb;white-space:nowrap;\"\u003eView\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eHelux 4,300 lb.\u003c\/strong\u003e\u003cbr\u003e#2024044578\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e4,300 lbs.\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e2,450 lbs.\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e20,000 lbs.\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003eMid-to-large fifth-wheels — excellent value\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;white-space:nowrap;\"\u003e\u003ca href=\"\/en-ca\/products\/curt-helux-coil-spring-gooseneck-pin-box-4-300-lb-pin-weight-20-000-lb-gtw\" style=\"color:#dc2626;font-weight:bold;\"\u003eView Product →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color:#fef2f2;border-left:3px solid #dc2626;\"\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e\n\u003cstrong\u003eHelux 5,000 lb.\u003c\/strong\u003e\u003cbr\u003e#2024044579\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e5,000 lbs.\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e2,850 lbs.\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003e20,000 lbs.\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;\"\u003eHeaviest fifth-wheels — maximum capacity \u0026amp; headroom\u003c\/td\u003e\n\u003ctd style=\"padding:12px;border:1px solid #e5e7eb;white-space:nowrap;\"\u003e\u003cstrong\u003eYou are here\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Curt","offers":[{"title":"Default Title","offer_id":48533732950168,"sku":"2024044579","price":2084.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0346\/2397\/9579\/files\/2024044579_Curt_CURTHeluxCoilSpringGooseneckPinBox5000lbsPinWeight20000lbsCapaci_0_1_1.webp?v=1773944011","url":"https:\/\/elkhartrvparts.com\/en-ca\/products\/curt-helux%e2%84%a2-coil-spring-gooseneck-pin-box-5-000-lb-pin-weight-20-000-lb-gtw","provider":"Elkhart RV Parts","version":"1.0","type":"link"}