{"product_id":"rgp-3-500-lb-axles-25-25-4-leaf-double-eye-trailer-springs-1-3-4-wide-kit","title":"RGP 3,500 lb Axles 25.25\" 4-Leaf Double Eye Trailer Springs 1-3\/4\" Wide Kit","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThis 25.25\" double eye, 4-leaf trailer spring is engineered to deliver dependable load support and a smoother ride for utility, boat, cargo, and livestock trailers. Rated at 1,750 lb per spring, it supports 3,500 lb per axle, helping absorb road shock, reduce trailer bounce, and keep proper axle alignment under load. \u003c\/p\u003e\n\u003cp\u003eConstructed from heavy-duty 60Si2Mn manganese spring steel, this leaf spring is heat-treated for strength and finished with a corrosion-resistant coating to ensure long-term durability in demanding towing conditions. The double-eye design provides stable, balanced suspension when used with standard hanger setups, making it an excellent choice for restoring ride height and performance on worn or sagging suspensions.\u003c\/p\u003e\n\u003cp\u003eDesigned as a direct OEM replacement for part numbers SW4B, LIB-401-DE, 124903, and PR4B, this spring offers straightforward fitment with common 3,500 lb axle setups. It's available as a single spring or as a pair, with optional U-Bolt kits or complete hanger kits for those looking to replace the entire suspension system at once. \u003c\/p\u003e\n\u003ch3 data-end=\"1090\" data-start=\"1062\"\u003e\n\u003cstrong\u003eWhat's include by Kit option:\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e1 Pair + 1 U-Bolt Kit + Hanger Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(2) 4-leaf double eye springs\u003cbr\u003e(4) U-bolts - 5.5\", for 2-3\/8\" axle, 1\/2\"-20 thread\u003cbr\u003e(2) Tie plates\u003cbr\u003e(8) Lock nuts\u003cbr\u003e(2) Front hangers (1-1\/2\")\u003cbr\u003e(2) Rear hangers (7\/8\")\u003cbr\u003e(4) Shackle straps - 2-5\/8\" (9\/16\" holes)\u003cbr\u003e(6) Shackle bolts - 3\" x 9\/16\"\u003cbr\u003e(6) Lock nuts\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2 Pair + 2 U-Bolt Kit + Hanger Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(4) 4-leaf double eye springs\u003cbr\u003e(8) U-bolts + (4) tie plates\u003cbr\u003e(6) Hangers (2 front, 2 rear, 2 center)\u003cbr\u003e(2) Equalizers - 7-3\/4\"\u003cbr\u003e(8) Shackle straps\u003cbr\u003e(14) Bolts\u003cbr\u003e(14) Lock nuts\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e1 Pair + 1 U-Bolt Kit\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e(2) 4-leaf double eye springs\u003cbr\u003e(4) U-bolts - 5.5\", for 2-3\/8\" axle, 1\/2\"-20 thread\u003cbr\u003e(2) Tie plates\u003cbr\u003e(8) Lock nuts\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eOEM \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eReplaces: SW4B, LIB-401-DE, 124903, PR4B, A226, K71-403-00\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RunningGearParts.com","offers":[{"title":"1 Pair+1 Ubolt Kit","offer_id":50607957114983,"sku":"SP-LS-DE-4L-3525-1Pair-Ubolt-M","price":73.89,"currency_code":"USD","in_stock":true},{"title":"1 Pair+1 Ubolt Kit+1 Hanger Kit","offer_id":50607957147751,"sku":"SP-LS-DE-4L-3525-1Pair-Ubolt-Hanger-M","price":104.89,"currency_code":"USD","in_stock":true},{"title":"2Pair+2 Ubolt Kit+1 Hanger Kit","offer_id":50607957180519,"sku":"SP-LS-DE-4L-33525-2Pair-Ubolt-Hanger-M","price":204.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8617\/5079\/files\/RGP_Product_Display_MAT-212_F.png?v=1792005495","url":"https:\/\/www.runninggearparts.com\/products\/rgp-3-500-lb-axles-25-25-4-leaf-double-eye-trailer-springs-1-3-4-wide-kit","provider":"RunningGearParts.com","version":"1.0","type":"link"}