# Which front and rear axle sets fit RC crawlers and trail trucks Question: Which front and rear axle sets fit 1/12 scale RC crawlers and trail trucks? Updated: 2026-10-01 Canonical: https://suntekstore.com/guides/hob-which-axles-fit-1-12-rc-crawlers/ ## Short answer The most clearly specified fit is [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/), a front-and-rear axle assembly with 145 mm overall width and a 5 mm connector for 1:12 scale use. Before ordering, verify your truck’s scale, whether you need a complete assembly or only housings, and whether the axle width, driveshaft input, and mounting points match your existing parts. ## Fit and size check - [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/): front and rear complete axle assembly for 1:12 scale; material is CNC-machined 6061 aluminum outer with cast iron metal gears; includes mounting hardware; total width is 145 mm for front and rear units and connector is 5 mm. - [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/): front and rear axles for 1/12 scale; material is metal; included parts are a front and rear axle set; exact axle width, connector size, and internal gear details are not listed. - [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/): front and rear axles for 1/12 scale; material is metal; included parts are a front and rear axle set; exact axle width, connector size, and internal gear details are not listed. - [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/): front and rear axle set for 1/12 scale; material is metal axle housing; included parts are a front and rear axle set; exact axle width, connector size, and internal gear details are not listed. - [Front Rear Axle Set](https://suntekstore.com/p/ST-61072398/): front and rear axle set for 1/12 scale; material is metal axle housing; included parts are a front and rear axle set; exact axle width, connector size, and internal gear details are not listed. - [RC Front Rear Axle Upgrade Part](https://suntekstore.com/p/ST-61075896/): front rear axle upgrade part for 1/12 scale; material is not listed beyond RC car part wording; included parts appear to be front and rear axle upgrade parts; exact axle width, connector size, and internal gear details are not listed. - [1/12 RC Axle Housing](https://suntekstore.com/p/ST-61077878/): rear axle housing only for 1/12 scale; material is aluminum alloy; this is a rear part, not a front-and-rear set. - [Rear Axle Housing + RC Crawler Axle](https://suntekstore.com/p/DCD-B-Cf1fa74c15b/): not a matched front-and-rear set; this bundle combines one rear housing and one rear axle item; the listed rear housing is 132.5 mm x 47 mm x 44 mm and weighs 110 g. ## How to choose the right axle set Start with the type of part you need. Some listings read like a complete replacement, while others read like housings or upgrade parts only. If you need gears and mounting hardware in one purchase, [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/) is the clearest option because the listing explicitly says complete axle assembly with gears and hardware. Then compare the connection details that are actually stated in the listing. [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/) gives a 145 mm overall width and a 5 mm connector, which makes it the easiest item to match against your current axle. The other front-and-rear sets, including [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/), [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/), [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/), [Front Rear Axle Set](https://suntekstore.com/p/ST-61072398/), and [RC Front Rear Axle Upgrade Part](https://suntekstore.com/p/ST-61075896/), do not list width or connector size, so you should compare your stock axle visually and check your manual or current part before ordering. Also decide whether color matters only after fit is settled. [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/) and [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/) appear to be the same type of metal front-and-rear axle set with different finishes, and [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/) and [Front Rear Axle Set](https://suntekstore.com/p/ST-61072398/) appear to be the same type of metal housing set with different finishes. ## How the pieces work together A crawler axle replacement has to match more than the wheel position. The front and rear units need to work with your driveshaft input, suspension links, shocks, steering parts on the front axle, and any internal gear parts you plan to reuse. That is why it helps to know whether you are buying a housing, an upgrade part, or a complete assembly. [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/) is the most complete listing because it names the gears and mounting hardware, so it is easier to use when replacing both ends of the drivetrain. [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/), [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/), and [RC Front Rear Axle Upgrade Part](https://suntekstore.com/p/ST-61075896/) are more general axle upgrade listings, so the buyer should confirm exactly what is in the package if the build depends on included gears or hardware. Housing-only parts are different from full axle assemblies. [1/12 RC Axle Housing](https://suntekstore.com/p/ST-61077878/) is a rear housing only, so it is useful for a rear case repair but not for someone who needs a front-and-rear set. [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/) and [Front Rear Axle Set](https://suntekstore.com/p/ST-61072398/) are also described as housing-style parts, so they make more sense when you already have compatible internals or are rebuilding an existing axle. ## Common mistakes to avoid The biggest mistake is shopping by scale name alone. Even when two parts are both labeled for the same scale, the listing may not state the same width, connector size, or mounting pattern. Match the exact kind of part first, then compare the stated dimensions and connection details where available. Another mistake is assuming a housing includes gears, shafts, or hardware. If the listing says housing, treat it as the outer case unless the product description clearly says assembly with gears, as [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/) does. Also avoid mixed bundles when you need a matched pair. [Rear Axle Housing + RC Crawler Axle](https://suntekstore.com/p/DCD-B-Cf1fa74c15b/) is not a direct answer to a front-and-rear axle set question because it combines one rear housing with one rear axle item rather than a coordinated front-and-rear set. Finally, do not treat finish color as a fit spec. Choose between items like [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/) and [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/) only after confirming that the underlying axle type matches your truck. ## A typical kit 1. [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/): Use this when you want a complete front-and-rear axle assembly with stated gears, hardware, width, and connector size. 2. [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/): Choose this if you want a metal front-and-rear axle set and the product description matches your truck’s platform. 3. [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/): Choose this for the same kind of metal front-and-rear axle set in a different finish after confirming fit from the listing. 4. [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/): This is a front-and-rear metal axle housing set suited to rebuilds where your existing internal parts are compatible. 5. [RC Front Rear Axle Upgrade Part](https://suntekstore.com/p/ST-61075896/): This works as a front-and-rear axle upgrade part when the product description matches your current truck and parts layout. ## FAQ ### Will any front-and-rear axle set fit any crawler or trail truck of the same scale? No. Scale alone is not enough because listings may differ in axle width, connector size, mounting points, and whether the item is a housing or a complete assembly. Compare the exact part style and any stated dimensions before ordering. ### Which option is the safest pick if I need the most complete replacement? [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/) is the safest complete-replacement style listing because it specifically says complete front and rear axle assembly with gears and mounting hardware. It also gives a 145 mm width and a 5 mm connector, which makes fit checking easier. ### Are the housing-style options the same as complete axle assemblies? No. [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/) and [Front Rear Axle Set](https://suntekstore.com/p/ST-61072398/) are described as metal axle housing sets, which suggests a case-focused replacement rather than a fully specified assembly with gears. If you need internal gears or hardware included, confirm that in the product description before ordering. ### Which products do not directly answer a front-and-rear axle set question? [1/12 RC Axle Housing](https://suntekstore.com/p/ST-61077878/) does not, because it is a rear axle housing only. [Rear Axle Housing + RC Crawler Axle](https://suntekstore.com/p/DCD-B-Cf1fa74c15b/) also does not directly fit the question because it is a mixed bundle of rear-only parts rather than a matched front-and-rear set. ### What should I check on my truck before ordering? Check whether you need a complete assembly, an upgrade part, or only a housing. Then compare your current axle width, driveshaft input size, front and rear mounting points, and any steering or link layout details against the product description; for [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/), compare the 145 mm width and 5 mm connector. ## Shop the list Live price, availability and delivery window for every item mentioned above. - [1:12 RC Axle Assembly](https://suntekstore.com/p/DCD-10001356958/): 64.14 USD, in stock, delivery 12-22 days, SKU DCD-10001356958 ([facts](https://suntekstore.com/p/DCD-10001356958.md), [buy](https://suntekstore.com/buy/DCD-10001356958?qty=1)) - [RC Car Axles Red](https://suntekstore.com/p/ST-61084316/): 40.14 USD, in stock, delivery 7-15 days, SKU ST-61084316 ([facts](https://suntekstore.com/p/ST-61084316.md), [buy](https://suntekstore.com/buy/ST-61084316?qty=1)) - [RC Car Axles Silver](https://suntekstore.com/p/ST-61084318/): 44.19 USD, in stock, delivery 7-15 days, SKU ST-61084318 ([facts](https://suntekstore.com/p/ST-61084318.md), [buy](https://suntekstore.com/buy/ST-61084318?qty=1)) - [1/12 RC Car Axle Set](https://suntekstore.com/p/ST-61072397/): 64.09 USD, in stock, delivery 7-15 days, SKU ST-61072397 ([facts](https://suntekstore.com/p/ST-61072397.md), [buy](https://suntekstore.com/buy/ST-61072397?qty=1)) - [Front Rear Axle Set](https://suntekstore.com/p/ST-61072398/): 73.74 USD, in stock, delivery 7-15 days, SKU ST-61072398 ([facts](https://suntekstore.com/p/ST-61072398.md), [buy](https://suntekstore.com/buy/ST-61072398?qty=1)) - [RC Front Rear Axle Upgrade Part](https://suntekstore.com/p/ST-61075896/): 34.29 USD, in stock, delivery 7-15 days, SKU ST-61075896 ([facts](https://suntekstore.com/p/ST-61075896.md), [buy](https://suntekstore.com/buy/ST-61075896?qty=1)) - [1/12 RC Axle Housing](https://suntekstore.com/p/ST-61077878/): 25.79 USD, in stock, delivery 7-15 days, SKU ST-61077878 ([facts](https://suntekstore.com/p/ST-61077878.md), [buy](https://suntekstore.com/buy/ST-61077878?qty=1)) - [Rear Axle Housing + RC Crawler Axle](https://suntekstore.com/p/DCD-B-Cf1fa74c15b/): 72.79 USD, in stock, delivery 12-22 days, SKU DCD-B-Cf1fa74c15b ([facts](https://suntekstore.com/p/DCD-B-Cf1fa74c15b.md), [buy](https://suntekstore.com/buy/DCD-B-Cf1fa74c15b?qty=1)) Store policies: free standard shipping to the US, 30-day returns. 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