SunRace Multi Freewheel - 6 Speed - 14-28T
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Product Information
Full details
The SunRace MFM2A 6-speed freewheel is an ideal replacement or upgrade for budget-friendly commuter, city, or entry-level mountain bikes that use a traditional threaded hub system. It offers reliable, smooth shifting performance through its 14-28 gear range, making it suitable for varied terrain; however, it is specifically designed for threaded wheels and will not work with modern cassette-style freehub bodies.
All features
| Model Part Number | MFM2A6DS |
|---|---|
| Brand | SunRace |
Extended Product Information
FAQs
Does this work with a cassette hub?
No, this is a freewheel and requires a threaded hub. It is not compatible with modern cassette-style freehubs.
Do I need a special tool to install this?
Yes, you need a standard splined freewheel removal tool compatible with SunRace/Shimano patterns.
Can I use this with a 7-speed shifter?
No, you must use a dedicated 6-speed shifter to ensure proper indexing between gears.
What is the largest cog on this freewheel?
The largest cog has 28 teeth, which provides a good gear for climbing.
Is the finish prone to rusting?
The zinc and black finish offers good protection, but regular cleaning and lubrication are recommended if riding in wet conditions.
Troubleshooting
Difficulty shifting between gears
Check the derailleur hanger alignment and ensure your shifting cable tension is properly indexed.
Clicking sound while pedaling
Verify that the freewheel is fully threaded onto the hub and that the chain is not excessively worn.
Freewheel spinning freely without engaging
This may indicate internal debris or dried lubricant in the pawl mechanism; a light application of bicycle-specific freehub oil may help.
Pros and Cons
Pros
- Reliable and smooth shifting performance
- Wide gear range suitable for diverse riding conditions
- Durable steel construction for longevity
- Corrosion-resistant coating for all-weather durability
Cons
- Compatible only with threaded hub interfaces
- Heavier than high-end aluminum cassette alternatives
- Requires specific freewheel removal tool for installation
Setup, Compatibility & Care
To install this freewheel, you will need a standard freewheel removal tool. Ensure the threads on your rear wheel hub are clean and lightly greased before threading the new unit on by hand. As you ride, the natural pedal force will tighten the freewheel securely onto the hub. For maintenance, keep the chain clean and properly lubricated to minimize wear on the steel sprockets. Avoid using high-pressure water near the hub bearings when cleaning the bike, as this can force dirt into the freewheel mechanism and compromise the internal pawls. If you notice any clicking or grinding, check the chain stretch, as a worn chain will accelerate the wear of the steel teeth.