V12/4 motor at 21000 Rpm

The Slot.it V12/4 21,000 rpm motor: Italian power for slot racing

The V12/4 21,000 rpm motor with reference SIMX15 is one of the most recognisable entries in Slot.it's motor catalogue, the prestigious Italian brand specialising in competition slot racing. With dual shafts available, it offers flexibility in mounting and adapts to various configurations according to the needs of each enthusiast or preparer.

Main features

• Nominal speed: 21,000 rpm, aimed at a balanced use between power and controllability.
• Two shafts: the motor includes a shaft at both ends, facilitating different transmission configurations.
• Reference: SIMX15
• Manufacturer: Slot.it (Italy)

Recommended applications

The V12/4 SIMX15 is designed for setups that require a motor with agile response without reaching the extremes of very high-revving motors. It is a common choice in medium-high preparation chassis, both in inline configurations and in other arrangements that allow for the utilisation of both motor shafts.

Thanks to its Slot.it origin, it fits naturally into chassis and mounts of the same brand, although its versatility allows it to be integrated into projects from other sources when the housing dimensions are compatible.

Behaviour and performance

The 21,000 rpm places this motor in an intermediate-high range within the Slot.it catalogue, making it suitable for Sport track systems — such as those from Scaleauto or the Slot.it track itself — as well as for universal track circuits like Scalextric or Ninco. The power curve allows for manageable driving even for drivers who are not seeking the absolute speed limit.

Usage recommendations

• Always check that the chassis or mount housing accepts the motor dimensions before installation.
• Adjust the gear ratio (pinion and crown gear) according to the type of track and the length of the longest straight on the circuit.
• Recommended break-in at low voltage to settle the braids and extend the motor's lifespan.
• Keep the collectors and braids clean to ensure optimal current transfer at all times.

Frequently asked questions

Does the SIMX15 motor include a pinion?

The available information does not specify that the motor is supplied with a pinion included. We recommend checking the product content list in the datasheet or contacting us before ordering if you need confirmation.

Is it compatible with chassis from other brands?

The motor can be mounted on chassis from other brands as long as the housing is dimensionally compatible. Being a widely used motor in the hobby, there are mounts and adapters from various manufacturers that facilitate its integration.

What is the difference between an inline motor and a sidewinder?

In an inline configuration, the motor is placed perpendicular to the rear axle (in line with the car), lowering the centre of gravity. In a sidewinder setup, the motor is parallel to the rear axle. The choice depends on the chassis and the regulations of the category in which you compete.

What level of driver is this motor indicated for?

Its 21,000 rpm makes it suitable for both experienced enthusiasts looking to improve their setup and club competitors needing a reliable and well-documented motor. It is not an extreme beginner motor, but it also does not require special preparation of the car for regular use.

Where can I find compatible spare parts and accessories?

Slot.it has one of the most comprehensive spare parts catalogues on the market, including braids, pinions, crown gears, and specific mounts. At Ministry of Hobby, you will find a wide selection of these accessories.

The Slot.it V12/4 21000 rpm motor (SIMX15) is a high-performance slot car motor featuring dual shafts for flexible drivetrain configurations. Ideal for inline and sidewinder setups, it fits Sport and universal track systems including Scalextric and Ninco. A trusted reference among slot racing enthusiasts and club-level competitors looking for reliable power and smooth response.