Neo-VQS VZ Chassis Guide
Neo-VQS is item 18094 in Tamiya's Racing Mini 4WD Series — the kit that introduced the VZ chassis, styled after the classic Vanquish Jr and finished in a black-molded body with red five-spoke wheels and black low-profile tyres. It is a specific product with a fixed box content and instruction sheet, not a generic label for "any VZ car," and Tamiya also sells a second version of it, the Neo-VQS Advanced Pack (item 95598), pre-fitted with a different motor and a set of option parts. This guide covers what each of those two kits actually contains, the VZ chassis numbers Tamiya publishes, and how to build the car to a clean stock baseline. For VZ-family fitment questions that go beyond this one kit — which option parts bolt to which VZ-based chassis in general — see the VZ chassis compatibility guide rather than this article.
What ships in the standard Neo-VQS kit (18094)
The box contains the VZ chassis parts molded in ABS, the black body shell, red 5-spoke wheels, black low-profile tyres, a marking sticker sheet, and an included motor turning the kit's stock 3.5:1 gear ratio. Tamiya's product listing gives the assembled dimensions as 158mm long by 98mm wide by 43mm high. Two AA (R6/UM3) batteries are required and not included, and assembly is Tamiya's usual snap-fit build with a small number of screws — no cement needed for a stock build. Because the chassis, gearbox and body are matched as one kit, the fastest route to a usable baseline is following the instruction sheet exactly before swapping anything. If you later want a faster motor, match it to the chassis family first — see the motor guide — because the wrong shaft type will not fit at all.
VZ chassis: the platform Neo-VQS introduced
Tamiya's official chassis catalogue lists VZ under the rear-motor, single-shaft family, alongside chassis such as AR and VS, not under the midship double-shaft PRO group (ME, MA, MS). The published figures for the chassis are below.
| Spec | Value |
|---|---|
| Motor layout | Rear-mounted, single-shaft |
| Length | 158mm |
| Width | 98mm |
| Wheelbase | 80mm |
| Tread (front / rear) | 59.5mm / 65.5mm |
| Chassis weight | 108.3g with batteries (62.3g bare) |
| Ground clearance | 2.5mm |
| Stock gear ratio | 3.5:1 |
| Bearings | 620 low-friction, molded in POM |
| Chassis / A-parts material | ABS |
The single-shaft layout is the practical fact to remember before buying any motor: Neo-VQS takes the same single-shaft standard motor lineup as other rear- and front-motor chassis, driven through a propeller shaft, and cannot take a double-shaft PRO motor built for MS/MA/ME cars. The carbon-fibre-reinforced G13 gear and 8T pinion (GP.462) are Advanced Pack (95598) tune-up items, not stock VZ fittings — the standard kit ships a standard plastic pinion.
Standard Neo-VQS vs the Neo-VQS Advanced Pack (95598)
The Advanced Pack takes the same VZ chassis and body as item 18094 and bundles it with a set of grade-up option parts and a hotter motor, so you are not sourcing each part separately.
| Item | Standard Neo-VQS (18094) | Neo-VQS Advanced Pack (95598) |
|---|---|---|
| Motor | Included stock motor, 3.5:1 | Light-Dash motor, 3.7:1 via High-Speed EX Counter Gear Set |
| Pinion gear | Standard plastic stock item | Carbon Fibre Reinforced G13 gear + 8T pinion |
| Rollers | Not included | Low-Friction Plastic Roller Set |
| Tyres | Stock low-profile | Super Hard Tires |
| Propeller shaft | Stock | 1.4mm Hollow Propeller Shaft |
| Braking / damping | Not included | FRP Rear Brake set, Side Mass Damper Set |
| Plates | Not included | Front & Rear FRP Plates |
Treat the Advanced Pack as a curated starting point for a faster build, not a different car — the underlying VZ chassis dimensions and body are the same as 18094. If you already own a standard Neo-VQS and want its parts individually rather than buying the whole Advanced Pack again, check part-by-part VZ compatibility using the VZ chassis compatibility guide, and pick rollers or dampers with the mass damper guide and a stay guide such as the FRP/carbon plate comparison in the stays guide.
Building and running Neo-VQS to a stock baseline
Build to the instruction sheet first, run it, and only then decide what to change. A few points specific to this kit are worth checking on the bench: confirm the gearbox halves are fully seated so the 3.5:1 stock ratio meshes without binding, seat all four 620 bearings evenly so the axles spin freely, and check the body clips are fully engaged so the shell does not lift or rattle under vibration — a loose body changes downforce and can rub a rear tyre at speed. Tamiya's published VZ weight of 108.3g already includes batteries fitted (62.3g bare) — the same items the official minimum machine weight of 90g counts — but that 90g figure applies to the complete assembled car, not the chassis alone, so weigh the finished build with body, motor and batteries fitted before assuming it passes technical inspection. Current official machine rules cover width (under 105mm), height (under 70mm), length (under 165mm), minimum ground clearance (at least 1mm) and permitted battery type (Tamiya-branded R6/AA/UM3 only) — see the official regulations for the full current text, since organiser rules and on-day technical inspection are what actually apply at any given event, not this article. For a structured pass through those checks before race day, see the official rules and technical inspection checklist, and for gearing choices once you move past the stock 3.5:1 ratio, see motor and gear ratio matching.
Frequently asked questions
Is the standard Neo-VQS a reasonable first kit?
Yes. It is a complete, self-contained kit with an included motor and no assumed prior parts, and building it strictly to the instruction sheet gives a working stock baseline before any tuning decision. If this is your first build, the beginner's roadmap covers the order to learn tuning skills in.
Can I put a Mini 4WD PRO motor in a Neo-VQS?
No. VZ is a rear-motor, single-shaft chassis driven through a propeller shaft. Mini 4WD PRO motors are double-shaft, built for midship PRO chassis (MS, MA, ME) that drive all four wheels directly with no propeller shaft, and the two motor families are not interchangeable. Confirm shaft type before buying a motor by name — see the motor guide for the full single-shaft lineup Neo-VQS can actually use.
Are the Advanced Pack's option parts automatically race-legal?
Being genuine Tamiya parts is necessary but not sufficient. Stock Class rules restrict where non-body parts may be modified and define a "forbidden zone" for attachments between the axles, and general race regulations set dimension, weight, tyre and battery limits. Confirm the current official rules and your event's own technical inspection before relying on any specific parts combination, including the ones bundled in 95598.