Lightened crown 27 teeth screw M2 16 mm diameter

Less weight on the rear end, more speed where it matters

The SIGA1627-LPL crown gear from Slot.it is a lightweight transmission component designed for those who fine-tune every gram of their car. With 27 teeth, M2 screw fixing, and a diameter of 16 mm, it fits into the standard Sport rail configurations of the brand and allows for precise adjustment of the gear ratio.

Function and performance

The lightweight design of the crown gear is not just an aesthetic detail: by reducing the rotating mass on the rear axle, the car responds more immediately in both acceleration and braking. In a competition setup, this difference is particularly noticeable on tracks with fast chicanes or tight corners where the inertia of the rear end can be penalising.

• 27 teeth: balanced gear ratio for mixed circuits.
• 16 mm diameter: compatible with the Slot.it transmission standard.
• M2 fixing: tightening screw that allows for mounting and dismounting the crown gear without excessive force or risk of damage to the axle.
• Lightweight design: reduces rotating mass and improves the dynamic response of the rear assembly.

Compatibility and mounting

This crown gear is designed for Slot.it axles and chassis that work with the M2 screw fixing system. Before mounting, check that the pinion you combine it with offers the gear ratio you are looking for based on the installed motor and the type of circuit. Slot.it publishes recommended gear ratio tables for each configuration on its official website, making it much easier to choose without trial and error.

The mounting is straightforward: insert the crown gear onto the axle, align it, and tighten the M2 screw with the corresponding Allen key. Check the lateral alignment with the pinion before the first run to avoid premature wear.

Preparation and common mistakes

• Do not overtighten the M2 screw: just the right torque is sufficient. Excessive tightening can deform the seat or make disassembly difficult in the paddock.
• Check the backlash (play between crown and pinion): a little play is necessary for smooth operation; too much causes loss of transmission and noise.
• Minimal lubrication: a drop of gear oil at the crown-pinion contact point extends the lifespan of both parts without penalising performance.

Ideal for…

Club preparers looking to fine-tune the response of the rear end, competitive drivers on Sport rail, and enthusiasts who enjoy tuning as much as driving. If you already have a Slot.it chassis and want to explore different gear ratios, this lightweight crown gear is a logical step in the evolution of your setup.

Frequently asked questions

Which pinions is this 27-tooth crown gear compatible with?

It is compatible with the standard pitch pinions of the Slot.it system. Check the gear ratio table on the official Slot.it website to find the combination that best suits your motor and circuit.

What real advantage does the lightweight design offer over a standard crown gear?

By reducing the rotating mass, the response of the rear axle is more immediate in acceleration and braking. On technical circuits with many rhythm changes, this improvement translates into more consistent lap times.

What Allen key do I need for the M2 screw?

The M2 screw typically uses a 1.5 mm Allen key, although it may vary depending on the specific screw. Check this before starting the assembly to avoid damaging the screw head.

Can I use this crown gear on Scalextric or Ninco rail?

This crown gear is designed for the Slot.it system, which works on Sport rail. Compatibility with other systems depends on the chassis and axle you use, not the rail. Always verify the axle measurements and fixing system before installing it in a different setup.

How often should I check or replace the crown gear?

It depends on usage and lubrication. In regular competition sessions, a visual inspection of tooth wear every few hours of running is sufficient. If unusual noise appears or the backlash increases significantly, it is time to consider a replacement.

The Slot.it SIGA1627-LPL is a lightweight 27-tooth crown gear with M2 screw fixing and 16 mm diameter, designed to reduce rotational mass on the rear axle of slot cars. Compatible with Slot.it Sport rail systems, it delivers sharper throttle response and improved consistency on technical layouts. A precise upgrade for club racers and competitive slot car builders seeking fine-tuned power transmission.