{"product_id":"crane-axle-40-spline-rear-spindle-kit-pair","title":"Crane Axle GM 14-Bolt 40 Spline Rear Spindle Kit (Pair)","description":"\u003cp class=\"p1\"\u003eThe Crane Axle 40 Spline Rear Spindle Kit is designed for high-load rear axle applications where factory spindle systems are no longer sufficient. Engineered for rock racing, competition crawlers, heavy trail rigs, and custom fabricated axle housings, these spindles are machined from 4140 chromoly steel and built to support massive 40 spline axle shafts under extreme torque and suspension load conditions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEach spindle is machined in-house, heat treated for improved hardness, and finish-ground for precise wheel bearing fitment. Compared to traditional factory spindle systems, the increased spindle wall thickness and larger shaft capacity dramatically improve resistance to bending and twisting under load. The spindle design also supports a wide range of custom fabrication needs, allowing the spindle end to be machined down for compatibility with smaller axle tube bores while retaining the strength advantages of a 40 spline wheel end system.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eIncludes:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e(2) 4140 Chromoly 14-Bolt 40 Spline Spindles\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e(4) 40 Spline Spindle Nuts\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e(2) Spindle Nut Retaining Dowels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eOptional:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003ca href=\"\/products\/crane-axle-40-spline-spindle-socket\" rel=\"noopener\" target=\"_blank\"\u003eCrane 40 Spline Spindle Socket \u003c\/a\u003esold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eSpecifications \u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003eDesigned for 40 spline rear axle assemblies\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eMachined from 4140 chromoly steel\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eHeat treated for increased hardness and durability\u003c\/li\u003e\n\u003cli class=\"li1\"\u003ePrecision finish-ground bearing surfaces\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eStandard 3.00\" outer diameter spindle body\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCan be machined to fit axle tube bores as small as 2.00\"\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eHeavy-duty extended weld surface design\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eIntended for custom fabricated axle housings\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eMade in the USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cstrong\u003eFitment \u003c\/strong\u003e\u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003ctable style=\"width: 99.9802%; height: 156.818px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003cth style=\"width: 6.39082%; height: 39.2045px;\"\u003eMake\u003c\/th\u003e\n\u003cth style=\"width: 47.7791%; height: 39.2045px;\"\u003eModel\u003c\/th\u003e\n\u003cth style=\"width: 13.2757%; height: 39.2045px;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"width: 28.0287%; height: 39.2045px;\"\u003eAxle Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"text-align: center; width: 6.39082%; height: 39.2045px;\"\u003e--\u003c\/td\u003e\n\u003ctd style=\"width: 47.7791%; height: 39.2045px;\"\u003eCustom Fabrication Applications\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 13.2757%; height: 39.2045px;\"\u003e--\u003c\/td\u003e\n\u003ctd style=\"width: 28.0287%; height: 39.2045px;\"\u003eRear Axle Spindle System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 6.39082%; height: 39.2045px;\"\u003eGM\u003c\/td\u003e\n\u003ctd style=\"width: 47.7791%; height: 39.2045px;\"\u003e14-Bolt Custom Builds\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 13.2757%; height: 39.2045px;\"\u003e--\u003c\/td\u003e\n\u003ctd style=\"width: 28.0287%; height: 39.2045px;\"\u003eRear Axle Spindle System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd style=\"width: 6.39082%; height: 39.2045px;\"\u003eDana\u003c\/td\u003e\n\u003ctd style=\"width: 47.7791%; height: 39.2045px;\"\u003eDana 60 \/ Dana 70 \/ Dana 80 Custom Builds\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 13.2757%; height: 39.2045px;\"\u003e--\u003c\/td\u003e\n\u003ctd style=\"width: 28.0287%; height: 39.2045px;\"\u003eRear Axle Spindle System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eFitment Notes:\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003eDesigned for custom fabricated rear axle applications\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eRequires modification of wheel hubs internally\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCompatible with 40 spline axle shaft systems\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eSpindle O.D. may be machined for smaller axle tube bore sizes\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eIntended for fabricated and high-strength rear axle builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e\n\u003cdetails class=\"details\"\u003e\n\u003csummary\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cb id=\"docs-internal-guid-785e0e5c-7fff-2ba3-1543-a8eda468b24e\"\u003e\u003cspan\u003eTech Insight\u003c\/span\u003e\u003c\/b\u003e \u003cspan class=\"svg-wrapper icon-plus\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" fill=\"none\" viewbox=\"0 0 14 14\" height=\"14\" width=\"14\"\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M2.75 7H11.25\" class=\"vertical\"\u003e\u003c\/path\u003e\n          \u003cpath stroke-linecap=\"round\" stroke-width=\"var(--icon-stroke-width)\" stroke=\"currentColor\" d=\"M7 2.75L7 11.25\" class=\"horizontal\"\u003e\u003c\/path\u003e\n        \u003c\/svg\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cdiv class=\"details-content rte\"\u003e\n\u003cp class=\"p1\"\u003eLarge tires, high horsepower, and aggressive off-road traction place substantial stress on rear spindle systems, especially in competition environments where shock loads are repeated continuously. Factory spindle systems can become a failure point due to limited spindle wall thickness and smaller axle shaft capacity.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBy increasing spindle wall thickness and supporting 40 spline axle shafts, this system significantly improves resistance to spindle flex and torsional load. The extended weld surface also improves spindle-to-housing strength in fabricated axle applications. Because the spindle body can be machined for smaller bore housings, builders gain additional flexibility when designing custom rear axle assemblies without giving up the benefits of a heavy-duty 40 spline wheel end.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Crane Axle","offers":[{"title":"Default Title","offer_id":56095459999910,"sku":"CA01032","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/CA01032-Crane-14-Bolt-40-Spline-Spindles-1_6db107ad-c4f2-448d-a28f-45698f1bddd9.jpg?v=1776869326","url":"https:\/\/wideopendesign.com\/products\/crane-axle-40-spline-rear-spindle-kit-pair","provider":"Wide Open Design","version":"1.0","type":"link"}