{"product_id":"sparkwhiz-trailer-shackle-kit-for-double-eye-springs-durable-fit","title":"SPARKWHIZ Trailer Shackle Kit for Double Eye Springs - Durable Fit","description":"\u003cp\u003eIn this review the SPARKWHIZ Trailer Shackle Kit is evaluated for owners of tandem-axle trailers using double eye springs. The bottom line: this kit is a straightforward replacement set that delivers an easy install and a solid fit for 3.5K to 5.2K axle setups, making it a practical buy for routine suspension maintenance. The reviewer found the packaged components comprehensive and corrosion resistant in appearance, and the kit's simple design makes it useful for DIYers and trailer shops who need a dependable, ready-to-fit shackle solution.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete kit:\u003c\/strong\u003e Includes two 7-3\/4in triangle equalizers and multiple shackle straps and bolts so the user gets everything needed for a tandem axle rebuild in one purchase.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable materials:\u003c\/strong\u003e Components are made of high-quality materials intended to resist corrosion and stand up to outdoor use on trailers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation friendly:\u003c\/strong\u003e The kit is designed for easy installation, which saves time for a DIY mechanic or a service technician fitting double eye springs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrect bushings:\u003c\/strong\u003e Comes with eight 9\/16in nylon bushings that reduce metal-on-metal wear and make tightening and alignment easier during assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull fastener set:\u003c\/strong\u003e Includes fourteen 9\/16in shackle bolts in 3in length plus locking nuts to secure the installation without needing extra hardware purchases.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis shackle kit is aimed at owners of tandem-axle utility, boat or cargo trailers with double eye springs in the 3.5K to 5.2K axle range who want a ready-to-install replacement kit. It is especially useful for DIYers comfortable with basic suspension work and trailer shops that value a comprehensive parts set to complete a shackle replacement in one visit.\u003c\/p\u003e\n\u003cp\u003eThose who expect heavy-duty, long-term abrasion resistance under extreme service conditions should investigate higher-grade or specialty shackles; one customer note indicates wear resistance can be a limitation over extended heavy use. For standard towing and maintenance use, however, the kit is a practical and economical choice.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete set saves time sourcing individual components and simplifies installation.\u003c\/li\u003e\n\u003cli\u003eThe included nylon bushings reduce friction and help with smoother operation and assembly.\u003c\/li\u003e\n\u003cli\u003eMaterials and finish appear corrosion resistant, suitable for outdoor trailer use.\u003c\/li\u003e\n\u003cli\u003eGood value for money for routine trailer suspension service or replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users reported limited wear resistance over long-term heavy use, so it may not be ideal for the most demanding applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit contents\u003c\/td\u003e\n\u003ctd\u003e2 triangle equalizers, 8 nylon bushings, 8 shackle straps, 14 shackle bolts \u0026amp; locking nuts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEqualizer length\u003c\/td\u003e\n\u003ctd\u003e7-3\/4in long triangle equalizers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBushing size\u003c\/td\u003e\n\u003ctd\u003e9\/16in nylon bushings (8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShackle straps\u003c\/td\u003e\n\u003ctd\u003e2 9\/16in shackle straps (8)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBolts\u003c\/td\u003e\n\u003ctd\u003e9\/16in - 14 x 3in long shackle bolts with locking nuts (14)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable axle range\u003c\/td\u003e\n\u003ctd\u003e3.5K to 5.2K tandem trailer axles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended use\u003c\/td\u003e\n\u003ctd\u003eOutdoor trailer suspension, double eye springs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe SPARKWHIZ Trailer Shackle Kit is a sensible, cost-effective replacement for tandem-axle trailers with double eye springs, offering an easy install and a complete hardware set that eliminates extra trips to the parts store. It represents good value for routine maintenance and most towing situations, though operators with extreme wear conditions should consider heavier-duty alternatives.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this kit include all fasteners needed?\u003c\/strong\u003e\u003cbr\u003eYes - the kit supplies fourteen 9\/16in x 3in shackle bolts and locking nuts so no additional fasteners are normally required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit my tandem trailer axles?\u003c\/strong\u003e\u003cbr\u003eThe kit is specified for 3.5K to 5.2K axles using double eye springs; verify spring eye spacing and bolt diameter to ensure compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre replacement bushings available?\u003c\/strong\u003e\u003cbr\u003eThe kit includes eight 9\/16in nylon bushings; for future replacements the same size nylon bushings should be used to match the kit components.\u003c\/p\u003e","brand":"SPARKWHIZ","offers":[{"title":"Default Title","offer_id":48164421992667,"sku":"B0BJJLRLC5","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71m7Zykth4L._AC_SL1500.jpg?v=1769172899","url":"https:\/\/gearmusthave.com\/products\/sparkwhiz-trailer-shackle-kit-for-double-eye-springs-durable-fit","provider":"GearMustHave","version":"1.0","type":"link"}