XBERSTAR RC portal axle set, 1/18

Replacing an axle on a small RC vehicle can mean settling for a part that covers only one end. This XBERSTAR set is described as a front and rear portal axle assembly for the 1/18 Redcat Ascent 18.

It brings both ends together in one upgrade, with servo mounts on the front and rear assemblies. That makes it worth considering if you want to replace or update the axle setup as a pair rather than source front and rear parts separately.

The listing specifies metal housings and internal drivetrain parts, but doesn’t provide installation details or a full inventory of included hardware. Those are practical gaps to account for before ordering.

Key specifications

This is a front-and-rear portal axle set for the 1/18 Redcat Ascent 18 RC vehicle. The housings are CNC-machined aluminium with an anodized finish, and the listing describes the front and rear assemblies as complete. Servo brackets are included on both axles, the product description says they won’t affect vehicle handling.

Inside, the set uses hardened steel bevel gears in a 10/20T configuration. It also specifies a heat-treated steel universal shaft and a rear VDI shaft. The maker presents these parts as suited to sustained, higher-intensity operation, but the listing does not give independent test results or explain how the gear ratio changes the vehicle’s behaviour. Treat those performance claims as product information, not a guarantee for every setup.

Who it’s for

This set is aimed at owners of the specified Redcat Ascent 18 who want portal axles at both the front and rear, including servo mounting points on each assembly. It’s a more complete approach than buying only one axle end, while a single-axle replacement may make more sense if just one assembly needs attention.

It’s a fit if you’re planning a matched front-and-rear axle upgrade and the listed vehicle matches yours. For a practical build scenario, someone refreshing both ends can compare the existing axle assemblies with the new pair and check how the servo mounts align before starting the work. The listing doesn’t explain the installation process, so don’t assume that tools, instructions or extra mounting hardware are included.

It may not be the best choice if your RC vehicle isn’t the 1/18 Redcat Ascent 18, or if you need a single replacement part rather than a front-and-rear set. The description gives no dimensions beyond the vehicle scale, so it offers limited detail for assessing fit on another model.

Everyday use

The appeal here is the combination of both axle assemblies with metal housings and steel drivetrain components, rather than a cosmetic change alone. The anodized finish is described as providing abrasion and rust resistance, but no finish colour options or durability testing are listed. The product name identifies this version as silver.

The set is best judged as a component upgrade for a specific RC model, not as a universal axle solution. If you’re comparing it with a more basic repair—replacing only the damaged end—the two-axle format gives you parts for both ends, but also means you should be sure you need the pair. There’s no stated information about tools, fitting time or setup adjustments.

Three specific questions

Which vehicle is it listed for? The 1/18 Redcat Ascent 18 RC vehicle. No other compatibility is stated.

Are servo mounts part of the assemblies? The description specifies servo brackets on both the front and rear axles. It doesn’t detail any separate mounting hardware.

What gear configuration is specified? Hardened steel bevel gears in a 10/20T configuration. The listing doesn’t quantify the resulting change in speed or torque.

Final verdict

Choose this XBERSTAR set if you need front and rear portal axle assemblies for the specified Redcat model and want the listed steel gears, shafts and aluminium housings in the same upgrade. The main drawback is the lack of installation and fitment detail beyond the named vehicle, so buyers looking for a single axle, another model’s part or a fully documented installation should look for clearer information before committing.