VehiclesTamiya TT-02B

Tamiya TT-02B Chassis

Name: Tamiya TT-02B
Brand: Tamiya

1/10 scale · 4WD buggy chassis · sold as kits

Tamiya's TT-02B is the 1/10 four-wheel-drive buggy version of the TT-02, a shaft-driven chassis you build from a kit.

It keeps the TT-02's 70T spur and 2.60:1 gearbox and axle stage, on a longer 266 mm wheelbase with buggy suspension and wider tires. The pinion, motor and tires come with each kit rather than with the chassis, so enter yours in the gearing tool to see the final drive and rollout for the kit you have.

Transmission & axle: 2.60:1
Spur: 70T
Wheelbase: 266mm
Introduced: 2013

Gearing Top speedverified

The pinion, motor and tires come with each kit: enter yours in the gearing tool.

Tamiya TT-02B — Photo: Tamiya (opens in a new tab)

Kits on this chassis Built on the TT-02B

Each kit adds its own body, tires, pinion and motor. The chassis figures below apply to all of them.

Kit	Part no.	Maker page
Neo Scorcher	58568	tamiya.comPage (opens in a new tab)
Plasma Edge II	58630	tamiya.comPage (opens in a new tab)
Plasma Edge II Iridescent Body	47454	tamiya.comPage (opens in a new tab)
Plasma Edge II Gun Metal	47446	tamiya.comPage (opens in a new tab)
Plasma Edge II Black Metallic	47366	tamiya.comPage (opens in a new tab)
Dual Ridge Black Metallic	47355	tamiya.comPage (opens in a new tab)
Neo Scorcher Blue Metallic	47346	tamiya.comPage (opens in a new tab)

Specifications

Last modified Sep 28, 2026

Spec	Value	Basis
Vehicle
Class The kind of vehicle the maker sells it as. It sets what the car is built to do and which cars it is fair to compare it with. Buggies are low, light off-road cars built for jumps and fast corners on dirt, clay or turf tracks. Drive All four wheels are driven. That gives more grip under power, especially on loose ground. The cost is more parts to maintain. Build A kit you build yourself from parts. Most kits come without motor, ESC, servo, radio and battery, and many without tires or a painted body. The manual lists what to add. Scale The maker's nominal size compared with a full-size vehicle. It works more as a class label than a measurement. A 1/10 monster truck is far bigger than a 1/10 touring car, so compare length and weight for real size.
Class	Buggy
Drive	4WD
Build	Kit
Scale	1/10
Drivetrain
Pinion The small gear on the motor shaft. Fewer teeth gear the car shorter: quicker acceleration, lower top speed and a cooler motor. More teeth do the opposite. On a chassis sold as kits, each kit brings its own. Spur The large gear the pinion drives. A bigger spur with the same pinion gears the car shorter. Pinion and spur must have the same pitch, or tooth size, to mesh. The Gearing parts table below shows this car's pitch and part numbers. Transmission & axle Every reduction after the spur, multiplied together: transmission, differentials and axle gears. It is fixed by the design; the gearing you change is the pinion and spur. This one is worked out from the tooth counts the maker publishes. Final drive How many times the motor turns for one turn of the wheels. A higher number is shorter gearing: more acceleration and pulling power, less top speed.
Pinion	With each kit
Spur	70TStock	Stock
Transmission & axle	2.60:1Derived	Derived
Final drive	With each kit
Wheels & tires
Tire diameter The outside diameter of the mounted tire, tread to tread. A taller tire covers more ground each turn, which gears the car taller. Race tires wear down over a day, and a smaller tire gears the car shorter.
Tire diameter	With each kit
Power
Motor Motor KV is the RPM a motor turns per volt with no load. This vehicle comes without a motor, so there is no stock KV; it depends on the one you fit. Battery The highest LiPo cell count the maker rates the electronics for. This vehicle comes without electronics, so it depends on the ESC and motor you fit.
Motor	With each kit
Battery	With each kit
Size & weight
Wheelbase The distance between the front and rear axle centers. A longer wheelbase is steadier at speed and over bumps; a shorter one turns more tightly.
Wheelbase	266 mm10.5 inStock	Stock

How to read these figures

Stock is as the vehicle ships.
Calculated is worked from the stock figures on this page rather than stored beside them, so the two cannot drift apart.
Derived is worked out from gear tooth counts the maker publishes rather than printed as a ratio; the notes below say how.
With each kit means each kit on this chassis brings its own, so enter yours in the gearing tool.

Other versions of this chassis

Gearing parts

Pinion and spur parts for the Tamiya TT-02B: fitted, and optional gearing supplied in the box
Component	Teeth	Pitch	Bore	Part number
Fitted at the factory
Spur	70T	Not published	Not applicable	51531 (opens in a new tab)

About teeth, pitch and bore

Tooth counts are the ones in the specifications above.
Pitch is given as metric module (Mod 1, Mod 0.8) or diametral pitch (32P, 48P). They are different standards and are not interchangeable, even where the numbers look close.
Bore is the pinion’s hole, listed separately from the motor shaft.
Linked part numbers go to the maker’s or official distributor’s page for that part.

How these numbers were settled

TT-02B is the buggy version of the TT-02 and shares its transmission: the 70T spur and the 2.6 stage after it, derived from Tamiya's TT-02 Type-SRX figures (6.55:1 on 27T/68T gives 2.601).

The Neo Scorcher page's 'Gear Ratio: 10.71:1 (using kit-included pinion gear)' is that 2.6 on 17T/70T, (70/17) x 2.6 = 10.706.
The pinion, motor and tires come with each kit.
Wheelbase 266mm is printed on the Neo Scorcher page.

Sources

Every figure on this page traces to one of these; where they disagreed, the note above says which was used and why. Links open in a new tab.

Maker documents

TT-02B chassis instruction manual (Tamiya PDF) (opens in a new tab)Spur p. 4, parts list p. 24 (PDF pages); gearing chart Motor & gear, PDF p. 19d7z22c0gz59ng.cloudfront.netUsed forGearingBattery fitFluids

Parts and electronics

Products 58568 (opens in a new tab)tamiya.comUsed forMain specsSizeFluids
Products 58720 (opens in a new tab)tamiya.comUsed forMain specs
Products 54500 (opens in a new tab)tamiya.comUsed forMain specs
Tamiya 51531 spur gear (opens in a new tab)tamiya.comUsed forGearing
Products 58568 (opens in a new tab)tamiya.comUsed forSize

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