7 speed derailleur Sunrace M30 long cage

Sunrace M30 7-speed rear derailleur: performance and reliability for your bike’s drivetrain

When it comes to bike drivetrains, the rear derailleur is one of the most essential and heavily used components. If you're looking for a 7-speed derailleur that’s reliable, easy to adjust, and budget-friendly, the Sunrace M30 is a solid choice. It’s perfect for cyclists who want to upgrade or replace a derailleur on a mountain bike, hybrid, or city bike.

A durable and versatile bike derailleur

Designed for 7-speed drivetrains, the Sunrace M30 offers broad compatibility with most standard freewheels and chains. It’s ideal for replacing a worn-out derailleur or refreshing an aging drivetrain without breaking the bank.

Built from steel and aluminum, this rear derailleur is tough enough to handle daily rides and light off-road use, delivering long-lasting performance.

Technical specifications of the Sunrace M30

Here are the key specs of the Sunrace M30:

• Speed compatibility: 7-speed (works with standard 7-speed freewheels and cassettes)

• Shifter compatibility: compatible with Shimano-type index (SIS) shifters

• Total capacity: up to 43 teeth

• Maximum sprocket size: 34 teeth

• Long cage (SGS): ideal for wide gear ranges

• Mount type: standard hanger mount (fits most bike frames)

• Materials: Steel body with reinforced plastic jockey wheels

• Weight: Approximately 330 grams

Who is it for ?

The Sunrace M30 is a great match for:

• Recreational mountain bikes or trail bikes with simple drivetrains

• Hybrid bikes used for both city and trail riding

• City bikes or refurbished second-hand bikes

• Riders looking for a cost-effective drivetrain replacement

Why choose the Sunrace M30 ?

Sunrace is a trusted brand in the world of bike drivetrains, known for producing reliable, durable, and affordable components. The M30 follows this tradition, delivering smooth shifting, stable chain tension, and wide compatibility.

It’s easy to install and doesn’t require complicated adjustments—making it a great solution for upgrading your 7-speed drivetrain with minimal hassle.

In short, the Sunrace M30 rear derailleur is a smart, affordable option for anyone looking to keep their 7-speed bike running smoothly. Whether you're commuting, cruising around town, or hitting some light trails, this derailleur won’t let you down.

Check out the Sunrace M30 in our shop and give your drivetrain a new lease on life !