VehiclesTamiya G6-01TR

Tamiya G6-01TR Chassis

Name: Tamiya G6-01TR
Brand: Tamiya

1/18 scale · chassis · sold as kits

Tamiya's G6-01TR is a 1/18 six-wheel-drive chassis based on the G6-01, with a hub reduction unit at every wheel, sold as the Dynahead kit, 58660.

The hub reductions slow the drive shafts and raise torque, and Tamiya prints the overall ratio as 37.35:1 with the stock 18T pinion. The frame is a slim monocoque with the gear cases built in, and each axle has its own gear differential for traction on rough ground. The pinion, motor and tires come with each kit rather than with the chassis, so enter yours in the gearing tool.

Final drive: 37.35:1on 18T
Introduced: 2018

Gearing Top speedsourced

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

Tamiya G6-01TR — Photo: Tamiya (opens in a new tab)

Kits on this chassis Built on the G6-01TR

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

Kit	Part no.	Maker page
Dynahead 6x6	58660	tamiya.comPage (opens in a new tab)

Specifications

Last modified Sep 28, 2026

Spec	Value	Basis
Vehicle
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.
Build	Kit
Scale	1/18
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. 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. 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	Not published
Transmission & axle	Not published
Final drive	37.35:1 on 18TMaker's chart	Maker's chart
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. At high speed tires can balloon and grow, so the real gearing gets taller as the car goes faster.
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

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.
Not published means it exists but no source we could find prints it.
With each kit means each kit on this chassis brings its own, so enter yours in the gearing tool.
Maker’s chart is the ratios the maker prints for this chassis with the pinions it names.

Other versions of this chassis

G6-01ChassisSix-wheel-drive chassis · 2017

How these numbers were settled

The G6-01TR is the G6-01 with a hub reduction unit at each wheel.

Tamiya's G6-01TR chassis page says the hub reductions give '総合減速比37.35：1', and the Dynahead page (58660) prints 'ギヤレシオ=37.35：1'.
The Dynahead manual fits an 18T pinion (MA9, step 12, p. 10); the gear train and hub gears carry no printed tooth counts, so the printed total is the only gearing fact.
The page gives the axle spacing as 173mm + 126mm, so no single wheelbase is shown.
Tamiya sells it as the Dynahead (58660).
The pinion, motor and tires come with the kit, so they are not part of the chassis figures: enter yours in the gearing tool.

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

G6-01TR (Dynahead) instruction manual (Tamiya PDF) (opens in a new tab)18T pinion, step 12 p. 10d7z22c0gz59ng.cloudfront.netUsed forMain specs

Parts and electronics

Product info EX (opens in a new tab)tamiya.comUsed forMain specs
Products 58660 (opens in a new tab)tamiya.comUsed forMain specs
Products 58660 (opens in a new tab)tamiya.comUsed forMain specs
Std.csv (opens in a new tab)tamiya.comUsed forMain specs

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