Offset 25Z crown gear bronze insert

The Slot.it Offset 25Z Crown Gear: Precision in Transmission for Inline Motors

When working with an inline configuration and Offset pod, the choice of crown gear is not a minor detail: it directly affects the transmission response, the wear of the pinion, and the overall behaviour of the car on track. The SIGO25-BZ crown gear from Slot.it meets this requirement with 25 teeth, a bronze insert, and a precise fit for a 2.38 mm axle.

Main Features

• 25 teeth: an intermediate tooth count that balances acceleration and top speed on most layouts.
• Bronze insert: the bronze core offers greater durability against wear and a smoother transmission than standard plastic inserts.
• 2.38 mm axle: a common measurement in Slot.it kits and chassis, ensuring a tight fit without play.
• Offset Line: specific geometry to work correctly with the Slot.it Offset pod; not interchangeable with standard or anglewinder pods.

Compatibility and Installation

This crown gear is designed exclusively for use with the Slot.it Offset pod in an inline configuration, meaning the motor is positioned parallel to the rear axle. It is not suitable for sidewinder or anglewinder configurations. Before installation, check that your rear axle diameter is 2.38 mm and that you are using the corresponding Offset pod.

The bronze insert facilitates tightening and reduces the risk of slipping on the axle, but it is advisable to check the fit after the first running sessions, especially if racing on tracks with elevation changes or high lateral load corners.

Common Mistakes

• Using this crown gear on a standard pod: the Offset line has a different geometry; the result would be poor meshing with the pinion and premature wear.
• Installing it on a different axle size: a 3/32" (2.38 mm) axle and a 3 mm axle may look similar but are not interchangeable without play.
• Not checking pinion-crown alignment: although the bronze insert ensures precision, poor lateral alignment generates noise and loss of efficiency.

Frequently Asked Questions

Can I use this crown gear with any Slot.it pod?

No. The reference SIGO25-BZ belongs to the Offset line and must only be used with the Slot.it Offset pod. Its geometry is not compatible with standard pods or anglewinder configurations.

What is the difference between the bronze insert and the plastic one?

The bronze insert offers greater wear resistance, better grip on the axle, and a more progressive transmission. It is the preferred option in competition compared to plastic inserts, which may deform with heat or after many hours of use.

Which pinions is it compatible with?

Slot.it does not specify the compatible pinion references in the product description. We recommend consulting the Slot.it gear ratio chart or contacting us to confirm the optimal combination based on your motor and desired gear ratio.

Is it suitable for club racing use?

Yes. The bronze insert and the manufacturing precision of Slot.it make it suitable for both recreational running and club racing sessions, where transmission consistency makes a difference.

What motor configuration corresponds to the inline with Offset pod?

In the inline configuration, the motor is aligned with the rear axle, meaning longitudinally relative to the car. The Offset pod laterally shifts the motor to optimise weight distribution. It is a common solution in racing due to the lower centre of gravity it provides.

The Slot.it SIGO25-BZ is a 25-tooth inline Offset crown gear with a bronze insert, designed for 2.38 mm axles and exclusive use with the Slot.it Offset pod. A precision slot car spare part ideal for club racing and performance tuning on 1/32 scale slot car tracks.