Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Couplings
Origin	-
Material	High-Grade Brass
Compatibility	RC Cars, Small Motors, Drones
Type	Variable Diameter Adapter
Finish	Polished Metal
Application	Axle Extension and Transmission
Durability	High Wear Resistance
Installation	Direct Fit Replacement
Weight	Lightweight Design
Precision	CNC Machined Tolerance
Package Includes	1 x Brass Coupling Rod

6 reviews

Anonymous

Mar 31, 2026

Rating: 4/5

Good quality but tight fit

The machining is excellent and the brass looks great. It was a bit tight going on initially, but after a little careful filing, it seated perfectly. Holds up well under motor stress.

Anonymous

Mar 26, 2026

Rating: 5/5

Durable and reliable

I've run this through several high-speed tests and it hasn't shown any signs of wear. The brass material handles heat better than I expected. Highly recommended for serious hobbyists.

Anonymous

Mar 21, 2026

Rating: 5/5

Essential for RC modifications

If you are modifying axles on older RC cars, this is a must-have. The transmission of power is smooth with no wobble. Much better than the plastic stock parts.

Anonymous

Mar 10, 2026

Rating: 5/5

Perfect fit for my custom build

This brass coupling solved my alignment issues immediately. The variable diameter feature allowed me to connect two different shaft sizes without needing extra adapters. Very solid metal construction.

Anonymous

Mar 03, 2026

Rating: 3/5

Works well but sizing unclear

The product works as described, but the exact min/max diameter range wasn't clearly listed in the specs I saw. I had to measure it myself upon arrival. Once installed, it functions fine.

Anonymous

Mar 03, 2026

Rating: 5/5

Superior to aluminum alternatives

Brass offers a nice balance of strength and slight flexibility which prevents snapping under sudden torque spikes. Great component for extending axles in tight chassis spaces.

5 FAQ

Q: What is the range of diameters this adapter can accommodate?

A: This specific model typically accommodates shafts ranging from 3mm to 5mm, allowing for versatile connections between different motor and axle sizes.

Q: Can this handle high-torque brushless motors?

A: Absolutely. The solid brass construction is designed to withstand the high torque output of modern brushless motors without stripping or deforming.

Q: Is this compatible with 1/10 scale RC cars?

A: Yes, this coupling is widely used in 1/10 scale electric and nitro RC cars for axle extensions and motor coupling applications.

Q: How do I install this if the fit is too tight?

A: We recommend gently polishing the inner bore with fine-grit sandpaper or using a reaming tool slightly larger than the shaft to ensure a smooth, secure fit without damaging the part.

Q: Does this come with set screws for securing the shafts?

A: No, set screws are not included in the package. You will need to use standard M3 or M4 set screws depending on your specific setup requirements.

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