Pinion extractor and inserter set

Extract and insert pinions with the tool used by serious preparers

Working on the transmission of a slot car requires the right tool. Forcing a pinion by hand or with improvised tools is the most common cause of damaged pinions, bent axles, and adjustments that never turn out as they should. The SITL06b set from Slot.it solves that problem at its root.

Function and performance

This set combines two complementary tools in one pack: an extractor to remove the pinion from the axle without applying lateral force, and an inserter to press it into the correct position in a controlled manner. Both are designed to work with pinions of maximum diameter 7.5 mm, a range that covers the vast majority of pinions used in 1/32 scale competition slot cars.

The result is a clean assembly, without tool marks on the pinion and without unnecessary stress on the axle. Small details that, on the track, make the difference between a smooth transmission and one that robs power or generates play.

Compatibility and assembly

Primarily designed for the standard transmission sets in the Slot.it range, although its use can extend to any plastic or metal pinion that falls within the indicated maximum diameter. It is especially useful when working on inline or sidewinder configurations, where access to the axle and precision in pinion positioning are critical for proper alignment with the crown gear.

Ideal for…

• Club preparers who frequently change gear ratios.
• Enthusiasts who assemble or disassemble cars for maintenance or improvement.
• Slot workshops that need a reliable and repeatable tool.
• Anyone who wants to stop improvising with screwdrivers or pliers.

Aspects to consider

The maximum diameter of 7.5 mm defines the range of compatible pinions. Before using the inserter, it is advisable to check that the pinion is correctly aligned with the axle to avoid crooked assemblies. As with any precision tool, careful use extends its lifespan.

Frequently asked questions

What exactly is the pinion extractor for?

It allows the pinion to be removed from the axle by applying axial and controlled force, avoiding bending or damaging the teeth. It is much safer than trying to remove it by hand or with non-specific tools.

And what advantage does the inserter offer compared to pressing by hand?

It ensures that the pinion is seated evenly on the axle, without tilting or being partially mounted. A poorly inserted pinion generates vibrations, premature wear, and loss of efficiency in the transmission.

Does it only work with Slot.it pinions or also with those from other brands?

It works with any pinion whose outer diameter does not exceed 7.5 mm, regardless of the brand. What matters is the diameter, not the origin of the pinion.

Is it suitable for metal pinions?

The available information does not specify a distinction between plastic and metal pinions. In case of doubt, consult directly with Slot.it or with our team before using it on metal parts.

Do I need this tool if I only change pinions occasionally?

If you change pinions even occasionally, it is worth having it. The risk of damaging a pinion or axle without the right tool far outweighs its cost.

The Slot.it SITL06b pinion extractor and inserter set is an essential workshop tool for 1/32 slot car preparation. Compatible with pinions up to 7.5 mm in diameter, it allows precise removal and installation without damaging axles or gears — a must-have for club racers and serious hobbyists working on inline or sidewinder drivetrains.