{"product_id":"crane-axle-30-spline-spindle-and-hubs-kit","title":"Crane Axle 30 Spline Spindle and Hubs Kit","description":"\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eCrane Axle’s GM 14-Bolt Billet Spindles\u003c\/strong\u003e are built for custom axle builders who need a \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003estronger billet replacement for factory cast 14-bolt spindles\u003c\/span\u003e. Precision machined in-house from solid 4140 billet steel, \u003cmeta charset=\"utf-8\"\u003ethese spindles are designed to work with standard smooth and metric ribbed GM 14-Bolt housings as well as custom fabricated axle housings using up to a 3\" I.D. bore. \u003cmeta charset=\"utf-8\"\u003eThey retain OE-style 14-Bolt wheel bearings and seals, making replacement parts easy to source and keeping serviceability straightforward both in the shop and on the trail.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe 30-spline designation can be misleading if you are comparing it to smaller axle platforms. A traditional GM 14-Bolt 30-spline axle shaft is approximately 1.550\" in diameter, making it larger in shaft diameter than the popular 1.500\" 35-spline axle used in many aftermarket axle systems. In other words, spline count alone does not determine shaft size or strength. The 14-Bolt 30-spline platform was designed around a substantial axle shaft and remains a strong choice for serious off-road builds.\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) \u003cspan\u003eGM 14-Bolt 30-spline \u003c\/span\u003eBillet Spindles\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e(2) Spindle Nut Spacers\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\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eGM 14-Bolt 30-spline axle shaft compatibility\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e30-spline design for factory-style 1.550\" diameter 14-Bolt axle shafts\u003c\/li\u003e\n\u003cli\u003ePrecision machined from solid 4140 billet steel\u003c\/li\u003e\n\u003cli\u003e3.00\" spindle outer diameter\u003c\/li\u003e\n\u003cli\u003eDesigned for 4.00\" x .500\" wall axle tubing\u003c\/li\u003e\n\u003cli\u003eFits standard smooth and metric ribbed GM 14-Bolt housings\u003c\/li\u003e\n\u003cli\u003eCompatible with custom fabricated housings with up to a 3.00\" I.D. bore\u003c\/li\u003e\n\u003cli\u003eUses OE-style GM 14-Bolt wheel bearings and wheel seals\u003c\/li\u003e\n\u003cli\u003eIndividually machined for consistent bearing and housing fitment\u003c\/li\u003e\n\u003cli\u003eIncludes spindle nut spacers\u003c\/li\u003e\n\u003cli\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\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eAxle Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGM\u003c\/td\u003e\n\u003ctd\u003eCustom Off-Road Applications\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e--\u003c\/td\u003e\n\u003ctd\u003eGM 14-Bolt Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChevrolet\u003c\/td\u003e\n\u003ctd\u003eCustom Fabricated Axle Builds\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e--\u003c\/td\u003e\n\u003ctd\u003eGM 14-Bolt Rear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGMC\u003c\/td\u003e\n\u003ctd\u003eCustom Fabricated Axle Builds\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e--\u003c\/td\u003e\n\u003ctd\u003eGM 14-Bolt Rear Axle\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\"\u003eFits standard smooth and metric ribbed GM 14-Bolt housings\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCompatible with fabricated axle housings using up to a 3\" I.D. bore\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eWorks with OE-style wheel bearings and seals\u003c\/li\u003e\n\u003cli class=\"li1\"\u003eCompatible with \u003ca href=\"\/products\/14-bolt-30-spline-aluminum-wheel-hubs-set-of-2\"\u003eCrane Axle 30 Spline Aluminum Wheel Hubs (CA01050\u003c\/a\u003e)\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\u003eFAQ\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\u003ch4\u003eIs a 30-spline GM 14-Bolt axle shaft smaller than a 35-spline axle shaft?\u003c\/h4\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eNo. Spline count alone does not determine axle shaft size. A GM 14-bolt 30-spline axle shaft measures approximately 1.550\" in diameter, while the common aftermarket 35-spline shaft is approximately 1.500\". The 14-bolt uses a much larger 30-spline architecture than many other axle platforms, which is why comparing spline count alone can be misleading.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003eWhy would I choose a 30-spline 14-Bolt instead of converting to 35 spline?\u003c\/h4\u003e\n\u003cp\u003eFor many builds, there is no need to move away from the 30-spline 14-Bolt simply because another axle uses more splines. The factory-style 1.550\" 30-spline shaft already provides a large axle shaft diameter and is well suited for high-horsepower, large-tire, and severe off-road applications.\u003c\/p\u003e\n\u003cp\u003eThe right choice should be based on the complete axle system, shaft diameter, material, differential, housing, and intended use rather than spline count alone.\u003c\/p\u003e\n\u003ch4\u003eWill a 1.500\" 35-spline axle shaft fit through these spindles?\u003c\/h4\u003e\n\u003cp\u003eYes. The GM 14-Bolt 30-spline spindle has enough internal clearance for the commonly used 1.500\" diameter 35-spline axle shaft. This gives custom axle builders flexibility when designing a housing around different differential and axle shaft combinations.\u003c\/p\u003e\n\u003cp\u003eDifferential spline compatibility and the rest of the axle package still need to match the axle shafts being used.\u003c\/p\u003e\n\u003ch4\u003eWhat is the advantage of a billet spindle over a factory 14-Bolt spindle?\u003c\/h4\u003e\n\u003cp\u003eFactory GM 14-Bolt spindles were designed as production components and can vary in condition and dimensional consistency, especially after decades of use. Crane Axle spindles are individually machined from solid 4140 billet steel to provide a consistent spindle for new fabricated axle builds and high-abuse applications.\u003c\/p\u003e\n\u003cp\u003eThis is especially useful when building an axle from scratch rather than modifying or reusing an original housing.\u003c\/p\u003e\n\u003ch4\u003eCan these spindles be used with a fabricated axle housing?\u003c\/h4\u003e\n\u003cp\u003eYes. These spindles are designed for both GM 14-Bolt housings and custom fabricated axle housings. They feature a 3.00\" outer diameter and can be used with housings or axle tubing with up to a 3.00\" I.D. bore.\u003c\/p\u003e\n\u003cp\u003eThey are commonly used with 4.00\" x .500\" wall axle tubing.\u003c\/p\u003e\n\u003ch4\u003eAre these spindles intended for steering 14-Bolt builds?\u003c\/h4\u003e\n\u003cp\u003eYes. They are well suited for custom steering axle conversions, fabricated front or rear axle housings, and other applications where a builder needs a strong 14-Bolt spindle foundation. Final compatibility will depend on the knuckle, hub, axle shaft, differential, and housing configuration being used.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/details\u003e\n\u003chr\u003e","brand":"Crane Axle","offers":[{"title":"Default Title","offer_id":56942847492262,"sku":"CA01050S-Kit","price":1275.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0693\/8394\/6406\/files\/CA01050S-Crane-14-Bolt-30-Spline-Spindles-1_8cd92b60-f70a-41e1-8294-a5a7d4e4786a.jpg?v=1786482448","url":"https:\/\/wideopendesign.com\/products\/crane-axle-30-spline-spindle-and-hubs-kit","provider":"Wide Open Design","version":"1.0","type":"link"}