SunRace MX3 10 Speed Cassette - 11-42T
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Product Information
Full details
The SunRace MX3 10 Speed Cassette is an ideal upgrade for mountain bikers and trail riders running a 1x10 drivetrain who require a wider climbing gear range without the cost or complexity of aftermarket expander sprockets. It offers a refined, smooth shifting experience across its wide 11-42T ratio, though users should ensure their existing rear derailleur is compatible with wide-range cassettes before installation.
All features
| Model Part Number | CSSRX3142Z |
|---|---|
| Brand | SunRace |
Extended Product Information
FAQs
Is this cassette compatible with 11-speed systems?
No, this is specifically designed for 10-speed drivetrains and indexed 10-speed shifters.
Can I use this on a standard HG freehub?
Yes, it is compatible with standard Shimano-style 8/9/10-speed HG freehub bodies.
Do I need a new chain when installing this?
It is highly recommended to install a new, correctly sized chain to ensure smooth shifting and prevent premature wear of the new cassette teeth.
What is the weight of the MX3 11-42T?
The cassette weighs approximately 387 grams.
Does the 42T sprocket wear out quickly?
Being made of A7075 aluminum, it is durable, but because it is an aluminum cog, it will wear faster than the steel sprockets if used frequently as a primary climbing gear.
Troubleshooting
Difficulty shifting into the 42T cog
Adjust the B-tension screw on your rear derailleur clockwise to move the upper jockey wheel away from the cassette.
Cassette feels loose on the freehub
Ensure the included spacers are installed correctly and the alloy lockring is tightened to the recommended torque spec.
Chain skipping across mid-range gears
Check your derailleur hanger alignment or inspect the chain for excessive wear; a new chain is recommended when installing a new cassette.
Pros and Cons
Pros
- Significantly wider gear range than standard 10-speed cassettes
- Lightweight construction with alloy spiders and large aluminum cog
- Durable black chrome finish resists wear
- Excellent value for 1x10 drivetrain conversions
Cons
- Requires a long-cage or wide-range compatible derailleur
- May require a derailleur hanger extension on some frames
- Aluminum 42T cog may wear faster than steel versions
Setup, Compatibility & Care
To install this cassette, ensure your wheelset uses a standard Shimano/SRAM 8/9/10-speed freehub body. Due to the wide 42T cog, you must verify that your rear derailleur has the capacity to clear the large sprocket. If your derailleur cage length is insufficient, a 'GoatLink' or similar derailleur hanger extension may be necessary to optimize B-tension adjustment. When cleaning, use a mild degreaser and a soft brush; avoid high-pressure water near the hub bearings to ensure longevity. Periodically check the alloy lockring torque to prevent loosening under heavy vibration.