M8 vs M10 Motorcycle Mirror Threads: How to Choose the Right Size

Buying a new pair of motorcycle mirrors sounds simple — until you see terms like M8, M10, right-hand thread, and left-hand thread.

If you are not sure what these mean, don't worry. In this guide, we'll explain the basics and help you choose the correct mirror mounting hardware for your motorcycle or scooter.

What Do M8 and M10 Mean?

M8 and M10 refer to the diameter of the threaded mounting bolt.

• M8 = approximately 8 mm thread diameter

• M10 = approximately 10 mm thread diameter

These are two common sizes used on motorcycles and electric scooters.

The important thing is that an M8 mirror mount will not directly fit an M10 mounting hole, and vice versa. Before ordering a new mirror, always check the thread size on your motorcycle.

Thread Direction Matters Too

Size is only part of the story.

Motorcycle mirror threads can also use different directions.

A right-hand thread tightens clockwise. This is the standard thread direction most people are familiar with.

A left-hand thread, sometimes called a reverse thread, tightens counterclockwise.

Some motorcycles use standard threads on both sides, while others may use a reverse thread on one side.

This means two motorcycles using M10 mounts may still require different mounting hardware.

How Can I Check My Motorcycle?

The easiest method is to check the specifications in your motorcycle's owner's manual or look at the original mirror mounting hardware.

If you already know your motorcycle model and year, you can also check the manufacturer's specifications.

When replacing the original mirrors, pay attention to:

Thread diameter → Thread direction → Left and right side

Checking these three things before installation can save a lot of trouble.

Why Rayman Supports Multiple Mounting Options

Motorcycles and electric scooters use many different mirror mounting standards.

That's why Rayman Aero Vision mirrors are designed with mounting compatibility in mind, including common M8 and M10 configurations.

Depending on the motorcycle, different mounting bolts or adapters may be required.

Our goal is simple: create a precision CNC mirror that can work with more motorcycles without compromising the clean appearance of the mirror itself.

Don't Choose a Mirror by Appearance Alone

A motorcycle mirror is not only a styling component.

Before choosing one, consider:

• Mounting compatibility

• Field of view

• Mirror clarity

• Vibration resistance

• Adjustability

• Nighttime glare

• Build quality

A beautiful mirror is only useful when it fits correctly and gives you a clear view of the road behind you.

Final Tip

Before ordering aftermarket motorcycle mirrors, don't simply ask:

“Is my motorcycle M8 or M10?”

Ask:

“What is the thread size and thread direction on each side?”

That small check can make installation much easier.

At Rayman, we believe good motorcycle accessories should combine precision engineering, functional design, and a clean riding experience.

Ride with a clearer view.

Rayman Aero Vision