VehiclesYokomo Rookie Speed RS2.0 TeamSpec

Yokomo Rookie Speed RS2.0 TeamSpec Chassis

Name: Yokomo Rookie Speed RS2.0 TeamSpec
Brand: Yokomo
SKU: RSR-020TS

1/10 scale · 4WD touring chassis kit · RSR-020TS

Yokomo's Rookie Speed RS2.0 TeamSpec is a four-wheel-drive 1/10 touring car kit loaded with aluminium and graphite parts, sold without motor, electronics, wheels or tires.

An 86T spur drives the belts through a 2:1 reduction after the spur, so the pinion sets the final drive. The TeamSpec adds an aluminium drive pulley to the RS2.0 layout. If you race it in a spec class, check the motor and spur rules before you buy a pinion.

Transmission & axle: 2.00:1
Spur: 86T
Introduced: 2026

Gearing Top speedsourced

Sold without a motor, so there is no stock KV: compare gearing by rollout.

Yokomo Rookie Speed RS2.0 TeamSpec — Photo: Yokomo (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. Touring cars are 4WD on-road cars for asphalt and carpet tracks, often raced in classes with fixed motor and battery rules. Drive All four wheels are driven, which puts power down more evenly and keeps the car steadier accelerating out of corners. The cost is more parts to maintain. Power Sold without a motor, so you choose the motor, ESC and battery yourself. Rows that depend on the motor say so. 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. Part number The maker's product number for this exact version. A V2, a new color, or a kit instead of an RTR usually has a different number, and parts can differ between them. Check it against your box or receipt before ordering parts.
Class	Touring
Drive	4WD
Power	Motor not included
Build	Kit
Scale	1/10
Part number	RSR-020TS
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. On-road racers often compare gearing by rollout instead, because tire sizes differ between cars.
Pinion	Not applicable
Spur	86TStock	Stock
Transmission & axle	2.00:1Derived	Derived
Final drive	Not applicable
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	Not applicable
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. Motor shaft The diameter of the motor's output shaft, which a pinion's bore must match. This vehicle comes without a motor, so 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	Not applicable
Motor shaft	Not applicable
Battery	Not applicable
Performance
Theoretical top speed It needs a motor KV, and this vehicle comes without a motor. Fit one and the calculator works it out from the motor's KV and the gearing.
Theoretical top speed	Not applicable

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.
Not applicable means the vehicle does not come with it, like the motor on a roller or the tires on a race kit, or does not have one, like a KV rating on a brushed motor.

Other versions of this chassis

Rookie Speed RS2.0ChassisEntry touring chassis kit · 2024

Gearing parts

Pinion and spur parts for the Yokomo Rookie Speed RS2.0 TeamSpec: fitted, and optional gearing supplied in the box
Component	Teeth	Pitch	Bore	Part number
Fitted at the factory
Spur	86T	48P	Not applicable	RS-SG4886

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.

How these numbers were settled

Option-loaded version of the RS2.0 belt-driven touring kit, built with the RS2.0 manual.

Yokomo's launch post says the new aluminium centre pulley fitted as standard is 20T, and the product page lists it as the Aluminum Drive Pulley (20T) (RS-630A) with the 40T diff pulley and case (RS-503GH) and the 86T spur (RS-SG4886) as standard parts.
The ratio after the spur works out to 40 / 20 = 2.0, the same layout as the RS2.0.
The product page lists the 30T pinion (BM-4830A) among the standard parts but its English text says the pinion gear is not included, so the pinion and total are left blank.
Motor, tires, wheels, body and electronics are bought separately.

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.

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