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ARRMA 3S V3 vs 223S/V4 Parts Compatibility: What Transfers and What Needs Verification

The newer 223S/V4 trucks still share some V3 hardware. Other systems changed enough that the old part number is no longer the safe answer.

Updated Sep 30, 2026

A V4 or 223S badge doesn't mean every V3 part stopped fitting, and it doesn't mean the truck underneath is unchanged. ARRMA kept some familiar 3S hardware on the newer Granite, Senton, Big Rock and Typhon. Suspension, body mounting, and parts of the drivetrain changed around it.

This guide separates the documented carryovers from the parts that need a fresh model-code check.

Naming: 223S is ARRMA's current product branding. V4 is the revision in the model code, for example Senton 223S ARA4303V4. ARRMA lists the current trucks as separate products with their own parts documentation.

Vehicle scope

V4 rows in this guide are editorial comparisons against ARRMA's V4 parts documentation. ExactMods fitment records still cover V3 only.

Quick answer

Some V3 hardware carries forward. The clearest carryovers in ARRMA's current documentation are the rear and center driveshaft parts, the steering set, and the 6×12×4 bearing. Suspension arms, body-retention hardware, shock setups, and differential components are revision-specific, so check each one against your truck.

A missing V4 listing means not confirmed. It doesn't mean does not fit.

Which trucks

Swipe to compare →

V3223S / V4
GraniteARA4302V3ARA4302V4
SentonARA4303V3ARA4303V4
Big RockARA4312V3ARA4312V4
TyphonARA4306V3ARA4306V4

We treat V3 and V4 as separate fitment targets. V3 evidence doesn't become V4 evidence on its own.

Confidence labels used here

  • Confirmed: ARRMA's current parts documentation lists the V3 part number on that exact V4 truck.
  • Not confirmed: we haven't found documentation for that exact fitment.
  • Does not fit: a source explicitly says the part is incompatible.

A new stock part number on its own isn't enough to call the older part incompatible.

V3 parts on the V4 trucks

Swipe to compare →

V3 partGranite V4Senton V4Big Rock V4Typhon V4
AR310864 / ARAC4043 rear driveshaftsConfirmedConfirmedConfirmedConfirmed
AR310884 / ARAC3955 center driveshaft kitConfirmedConfirmedConfirmedConfirmed
AR310780 / ARAC4041 front driveshaftsConfirmedConfirmedConfirmedConfirmed
AR330550 / ARA330550 front shocksConfirmedNot confirmed — V4 lists ARA-2373ConfirmedConfirmed
AR330551 / ARA330551 rear shocksConfirmedNot confirmed — V4 lists ARA-2372ConfirmedConfirmed
ARA310956 differential assemblyConfirmed*Confirmed*Confirmed*Confirmed*
ARA340179 steering setConfirmedConfirmedConfirmedConfirmed
ARA610041 6×12×4 bearingConfirmedConfirmedConfirmedConfirmed

*Confirmed here means the part appears in the V4 parts documentation. It does not establish compatibility with every V4 input-gear configuration. See the differential section.

Where we couldn't confirm the exact V4 part, the table says Not confirmed and doesn't fill the gap with a platform assumption.

Rear and center driveshafts carry over cleanly

AR310864 / ARAC4043 is one of the clearest V3-to-V4 carryovers. Current ARRMA parts documentation lists it across the V4 family.

AR310884 / ARAC3955 also appears in all four V4 parts documents. The part carries over, but the drivetrain around it doesn't necessarily stay the same.

The V4 trucks add a center differential

The 223S/V4 trucks use the newer center-differential drivetrain architecture. Their current parts documentation shows the revised center-drivetrain layout and related hardware.

AR310884 carrying over doesn't make a V3 center-drivetrain diagram a usable V4 parts list.

Differential: same module, different configuration

ARA310956 (assembled 37T, 1.35M) is documented with the 13T input gear ARA311031 across the V3 trucks. ARA310956 also appears in current V4 parts documentation.

The input gear is where the old shortcut stops working. Current V4 parts packs show ARA311153, another 13T 1.35M input gear, in the newer drivetrain. Both gears are 13T and 1.35M, and that doesn't make them interchangeable.

We haven't confirmed ARA310956 as a direct pairing with ARA311153. Treat the older composite diff setup and the newer V4 metal drivetrain as separate configurations unless the parts documentation confirms the combination.

Suspension arms changed again

The V3 trucks had two arm groups:

Swipe to compare →

V3 groupFrontRear
Granite / Senton
AR330443Granite 3S record · ConfirmedSenton 3S V3 record · Confirmed
AR330516Granite 3S record · ConfirmedSenton 3S V3 record · Confirmed
Big Rock / Typhon
AR330543Big Rock 3S V3 record · ConfirmedTyphon 3S V3 record · Confirmed
AR330540Big Rock 3S V3 record · ConfirmedTyphon 3S V3 record · Confirmed

The V4 trucks use different stock replacement numbers:

Swipe to compare →

V4 groupFrontRear
Granite / SentonARA-1607ARA-1606
Big Rock / TyphonARA330847ARA330846

The stock part numbers changed, so a V3 arm is no longer the documented stock replacement for a V4 truck. That doesn't tell us whether someone can make a V3 arm work in a conversion, and we don't make that call.

Senton shocks changed

Senton V3 uses AR330550 front and AR330551 rear. Senton V4's parts documentation calls out ARA-2373 at the front and ARA-2372 at the rear.

Other V4 trucks still show the older shock numbers, so a V3 Senton shock number shouldn't carry forward to ARA4303V4 automatically. Check the revision before the family.

Body mounting changed too

The 223S/V4 generation moved further into clipless body retention.

Granite 223S uses V4-specific body hardware including ARA-1604 and ARA-1605. Senton V4 uses its own body-post and release hardware, including ARA-1628 and ARA-1610.

Typhon shows how revisions mix old and new. Its V4 documentation still includes AR320458 and adds ARA320826 in the body-mount system.

So "does the V3 body mount fit V4?" may be too broad a question. One piece can carry forward while the retention system around it changes.

Categories that need a revision check

  • Suspension arms
  • Body mounts and release hardware
  • Bumpers
  • Hubs and steering blocks
  • Full bearing kits
  • Input gears and internal differential combinations
  • Aftermarket CVDs
  • Wheel and hex conversions

We don't carry a V3 record to V4 in these areas without new evidence, because ARRMA doesn't publish a universal V3-to-V4 transfer list.

Individual parts can still carry over, and each one gets checked on its own.

"Fits ARRMA 3S" isn't enough

A listing can say something true and still leave out the part that matters. ARA4303V3 tells you more than "Senton 3S." ARA4312V4 tells you more than "Big Rock 3S."

Same truck name, different parts book.

Before you buy a V3 part for a V4 truck

  1. Check the model code. Treat V3 and V4 as separate fitment targets.
  2. Check the exact part number. Matching dimensions or names don't establish fitment.
  3. Look for your V4 model in ARRMA's current documentation. Exact-model evidence beats "fits ARRMA 3S."
  4. Check the surrounding system. A shaft can carry over while the diff, body retention, or suspension around it changed.
  5. Don't read a missing V4 listing as "does not fit." It means not confirmed.

The useful question isn't "is this a 3S part?" It's "is this part confirmed for my exact revision?"

Find your exact fitment

Match My Mod starts with your vehicle and the part you're working on. Browse all parts shows the fitment records we've verified. If a V3 record has no V4 counterpart yet, it stays unconfirmed until the evidence changes.

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See something wrong? Send the model, part number, and source, and we'll review the record and update it if the evidence supports a correction.

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Last verified: Sep 30, 2026

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