Stopper for 3/32 axle

The stopper that doesn't add weight where it shouldn't: NSR4860 for 3/32" axle

When it comes to slot preparation, every tenth of a gram counts. The NSR4860 is an ultralight stopper specifically designed for 3/32" axles, the most common diameter in 1:32 scale competition cars. Weighing just 0.12 g, NSR has created a component that performs its positioning function without adding unnecessary mass to the assembly.

Function and performance

The stopper has a clear mission: to fix the axial position of the crown gear, pinion, or any other element mounted on the axle, preventing lateral movement during the race. A poorly retained axle generates play that translates into loss of traction, uneven wear, and erratic behaviour in corners.

NSR's ultralight philosophy in this component responds to a real need in high-level preparation: to minimise unsprung mass and the total weight of the rear end, especially relevant in sidewinder and inline setups where the mass balance over the axle directly influences traction.

Compatibility

This stopper is compatible with axles of 3/32" diameter (approximately 2.38 mm), the most widely used standard in the 1:32 category from brands such as NSR, Slot.it, Scaleauto, or Avant Slot. Always check that the diameter of your axle matches this measurement before installation.

Installation and preparation

Installation is straightforward, but it is important to pay attention to the exact position before permanently fixing the stopper. Use a caliper or gauge to ensure that the crown gear is centred relative to the pinion and that the lateral play is appropriate. Excessive tightening can cause friction; too much play can lead to loss of efficiency in the transmission.

• Check the alignment of the crown gear and pinion before fixing the stopper.
• Ensure that the axle rotates freely after installation.
• In competition setups, check the position of the stopper after the first running sessions.

Common mistakes

The most common mistake is not verifying the position of the crown gear relative to the pinion before locking the stopper. Another point to watch: confusing 3/32" axles with 2 mm axles; although the difference is minimal (0.38 mm), it can cause the stopper not to grip properly or to do so with too much tension.

Frequently asked questions

What axle diameter is the NSR4860 designed for?

It is exclusively designed for 3/32" axles (approximately 2.38 mm), the most commonly used standard in 1:32 slot competition cars.

How much does this stopper weigh?

Only 0.12 g, making it one of the lightest options on the market for this type of component.

Is it compatible with brands other than NSR?

Yes, as long as the axle is 3/32". It is commonly used in setups with Slot.it, Scaleauto, or Avant Slot chassis and axles, among others.

How many stoppers are included in the NSR4860 reference?

The available information does not specify the exact number of units per pack. We recommend checking the product sheet in-store or contacting us to confirm.

What is the difference between using an ultralight stopper and a conventional one?

The main benefit is the reduction of mass in the rear end. In competition, minimising the weight of non-structural components improves the car's response and facilitates mass balance.

The NSR4860 is an ultralight stopper for 3/32" axles, weighing just 0.12 g. Designed for 1:32 scale slot car competition builds, it secures the axle components in place without adding unnecessary mass to the rear end. Compatible with NSR, Slot.it, Scaleauto and Avant Slot axles of the same diameter, it is an essential part of any serious slot car preparation toolkit. Available at Ministry of Hobby, your specialist for slot car parts, upgrades and racing accessories.

Information not found

It has not been possible to confirm with certainty the exact number of units included in the blister of the NSR4860 reference. If you need this information before your order, you can contact us and we will verify it.