12z Extralight 6.5mm AW & SW

The Extralight pinion from Sideways: less weight, more response in every corner

The Sideways SWPN12T65 is a pack of 2 pinions with 12 teeth and a diameter of 6.5 mm, designed under the Extralight philosophy of the brand: to minimize rotational mass so that acceleration is sharper and the motor works with less inertia. A small detail that is noticeable on the track.

Main features

• Number of teeth: 12z
• Diameter: 6.5 mm
• Line: Extralight — lightweight construction to reduce rotational mass
• Compatibility: Anglewinder (AW) and Sidewinder (SW)
• Pack contents: 2 units
• Reference: SWPN12T65

Function and performance

In the transmission of a slot car, the pinion is the direct link between the motor and the crown gear. A lighter pinion reduces rotational inertia, resulting in sharper starts, more controlled braking, and a generally more responsive throttle. The Extralight series from Sideways takes this idea to the extreme: same profile and geometry as their standard pinions, with just enough material for the assembly to rotate without unnecessary ballast.

With 12 teeth and 6.5 mm, this pinion fits into the usual transmission ratios of competitive slot racing, allowing adjustment of the gear ratio according to the track and motor characteristics.

Compatibilities

The SWPN12T65 is specifically designed for two motor configurations:

• Sidewinder (SW): motor positioned parallel to the rear axle, a very common configuration in GT and touring cars.
• Anglewinder (AW): motor angled relative to the rear axle, a compromise solution between performance and weight distribution.

Before installation, check that the pinion module is compatible with the crown gear you are using in your car, as the final gear ratio will depend on both parts.

Installation and preparation

Installation is not difficult for those who have worked with slot pinions before. It is advisable to clean the motor shaft before pressing the pinion on, ensure it is well aligned with the crown gear, and check the lateral play once coupled. A slight retention point on the shaft helps prevent migration during the session. If you frequently change gear ratios, having several packs on hand speeds up adjustments between runs.

Ideal for…

Drivers looking to squeeze every tenth from their setups: from the enthusiast wanting to feel a real difference in their club car to the tuner optimizing every gram of the drivetrain before a championship day. The Extralight concept makes more sense the tighter the competition.

Frequently asked questions

How many units are included in the pack?

The SWPN12T65 pack includes 2 pinions with 12 teeth and 6.5 mm.

What is the difference between an Extralight pinion and a standard one?

The Extralight line from Sideways reduces the mass of the pinion compared to the standard version, decreasing rotational inertia. The result is a more reactive transmission, particularly noticeable in short braking and acceleration.

Is it compatible with Inline motors?

This pinion is designed and specified for Anglewinder and Sidewinder configurations. For Inline setups, check the specific compatibility with your motor shaft before use.

Which crown gears does this pinion pair well with?

The pinion module must match that of the crown gear you use. Verify the module before combining them; Sideways offers compatible crowns that form balanced transmissions.

Do I need special tools to install it?

It is not essential, although a pinion puller/installer makes the job easier and avoids forcing the motor shaft. If you regularly prepare cars, it is worth having one on hand.

Sideways SWPN12T65 12-tooth Extralight slot car pinion, 6.5mm diameter, compatible with Anglewinder and Sidewinder motor configurations. Designed to minimize rotational mass for sharper acceleration and improved throttle response. Pack of 2 units. A go-to upgrade for club racers and serious slot car builders looking to fine-tune their drivetrain ratio and reduce drivetrain inertia.