Quick answer
Most VS4-10 axle questions come down to three things: which housing you have, whether you are keeping the factory gear set, and what hardware you plan to reuse. The F10 Straight Axle Front Housing is a direct replacement for VS4-10 builds, while the F10 Portal Rear Axle Set is a complete portal assembly. Check your existing axle type first, then match the gear set and covers to that platform.
F10 Portal Rear Axle Set
If you are sorting through Currie HD44 FAQ threads and VS4-10 axle fitment charts, you have probably noticed that answers depend heavily on which axle you already own. The VS4-10 platform has used both straight and portal axles, and the parts do not always cross over.
This FAQ answers the rear axle buying questions we hear most often, using only the specifications published for each Vanquish Products part. Where a detail is not listed, we say so rather than guess.
Which VS4-10 front housing should I buy?
The F10 Straight Axle Front Housing is the replacement front axle housing option for VS4-10 builds. The listing is for the housing only, so you reuse your existing gears, axle shafts, and hardware. It is compatible with the VS4-10 axle, VS4-10 Chassis Kit, and VS4-10 Phoenix applications.
If you are running a portal front axle, this straight housing is not the right part. Confirm whether your build uses a straight or portal front end before ordering, because the two designs do not share housings.
- Check your current front axle type before ordering a replacement housing.
- The housing ships alone, so plan on reusing bearings, gears, and shafts.
Is the F10 Portal Rear Axle Set a complete assembly?
The F10 Portal Rear Axle Set is a molded portal rear axle assembly. It uses an ultra-rigid design with an integrated truss that ties both ends of the axle together, plus brass inner reinforcement tubes that add strength and put some weight down low on the vehicle.
That integrated truss and brass tube layout is the main difference from a plain molded axle. The added low weight can help stability on climbs, but it also means the assembly is not a bare housing you can strip down to nothing. Plan your build around the complete unit.
- The integrated truss ties both axle ends together for rigidity.
- Brass inner tubes add strength and low-mounted weight.
Can I swap the plastic portal cover for aluminum?
Yes. The Aluminum F10 Rear Portal Cover replaces the factory molded plastic cap on rear F10 axles and is also compatible with the machined aluminum F10 axles. The package includes two machined aluminum caps, and you reuse all bearings, hardware, gears, and axle shafts.
Vanquish points to the VPS09007 or VPS08600 instruction manuals for replacement assembly guidance, so have those on hand before you start. The cover is available in multiple colors if you want to match your build.
- Reuse bearings, hardware, gears, and axle shafts during the swap.
- Check VPS09007 or VPS08600 manuals for assembly steps.
What gear set fits a Currie or AR44-style axle?
The AR44 Axle Gear Set - 30T/8T is a fully machined hardened ring and pinion set with a laser-etched Vanquish logo and tooth count. It includes grade 12.9 M2 hardware for attaching to the axle spool, and one gear set is required per axle.
It is compatible with the factory Axial AR44 axle as well as Vanquish Products Currie housings. If you are running a different housing, verify the gear set before buying, because the listing only names those two applications.
- One gear set per axle.
- Grade 12.9 M2 hardware is included for spool attachment.
Should I upgrade to titanium hardware?
The Titanium Hardware F10 Portal Rear Axle Kit replaces the standard hardware used when assembling the F10 Portal Rear Axle. Titanium offers a strong strength-to-weight ratio and corrosion resistance, which suits performance-focused builds.
One honest tradeoff: the kit does not include an M3 nylock nut, and the listing notes that titanium nylocks are not recommended for use with titanium hardware. Keep that in mind if you are replacing every fastener on the axle.
- Titanium saves weight and resists corrosion.
- M3 nylock nut is not included, and titanium nylocks are not recommended.
Do I need a new panhard mount for a VS4-10?
The VS4-10 Panhard Mount is an aluminum mount for the VS4-10 platform, available in Black or Clear. It is a single-piece package, so it replaces the mount rather than adding to it.
If your build already has a solid panhard mount and you are not chasing durability or color matching, this is a lower-priority upgrade. It matters most when you are replacing a worn or flexing mount.
- Available in Black or Clear to match your build.
- Package includes one aluminum panhard mount.
Axle fitment checkpoints
Identify your axle type first
Straight and portal F10 axles use different housings and covers, so confirm which one is on your VS4-10 before ordering. Match the part to your existing axle, not to the chassis name alone.
Confirm gear set compatibility
The AR44 Axle Gear Set - 30T/8T is listed for factory Axial AR44 axles and Vanquish Products Currie housings. If your housing is not one of those, verify before buying.
Plan hardware reuse
The F10 Straight Axle Front Housing and Aluminum F10 Rear Portal Cover both reuse your existing internals and hardware. Budget for bearings, gears, and shafts only if yours are worn.
Account for missing fasteners
The Titanium Hardware F10 Portal Rear Axle Kit does not include an M3 nylock nut, and titanium nylocks are not recommended with titanium hardware. Order the nut separately and stick with standard nylocks.
Parts referenced in this FAQ
- F10 Straight Axle Front Housing: Replacement front axle housing option for VS4-10 builds; compatible with VS4-10 axle, VS4-10 Chassis Kit, and VS4-10 Phoenix applications; package includes one housing. A direct housing replacement if you already run a straight front axle and want to reuse your internals.
- F10 Portal Rear Axle Set: Molded portal rear axle with an integrated truss tying both ends together and brass inner reinforcement tubes for strength and low-mounted weight. Adds rigidity and low weight, which can help stability, but it is a complete assembly rather than a bare housing.
- Aluminum F10 Rear Portal Cover: Replaces the factory molded plastic cap on rear F10 axles and is compatible with machined aluminum F10 axles; package includes two caps; reuse all bearings, hardware, gears, and axle shafts. A straightforward durability and appearance upgrade with no need to replace internals.
- AR44 Axle Gear Set - 30T/8T: Fully machined hardened ring and pinion with laser-etched logo and tooth count; includes grade 12.9 M2 hardware; one set per axle; compatible with factory Axial AR44 axle and Vanquish Products Currie housings. Confirms gear set compatibility for Currie and AR44-style axles so you do not order the wrong ratio or hardware.
Axle decisions get simpler once you confirm your housing type and gear set compatibility. Start there, then decide whether covers, hardware, or mounts are worth adding to your build.
