DMR Single Cassette Sprocket - 12t
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Product Information
Full details
This DMR Single Speed Cassette Sprocket is designed for cyclists seeking a reliable and durable single-speed conversion for their Shimano HG pattern freehub. It offers a straightforward way to simplify a drivetrain, ideal for BMX, dirt jump, or specific mountain bike setups. While versatile with various chain types, its optimal performance is achieved with an 8-speed chain. The primary caveat is its fixed 12-tooth size, offering no gear ratio flexibility.
All features
| Model Part Number | DMR-SSH-CASS-12T |
|---|---|
| Brand | DMR |
Extended Product Information
FAQs
What type of freehub does this sprocket fit?
This sprocket is designed for Shimano HG (HyperGlide) pattern freehub bodies.
What chain speed should I use?
While it works with 5 to 10-speed chains, an 8-speed chain is recommended for best performance and durability.
Can I use this on a geared bike to make it single speed?
Yes, this sprocket is intended for converting geared bikes to a single-speed setup, provided they have a Shimano HG freehub.
Do I need a chain tensioner?
Depending on your frame's dropouts and desired chainline, a chain tensioner may be required to maintain proper chain tension.
What does '12t' mean?
'12t' refers to the number of teeth on the sprocket, which is 12.
Is this sprocket made of steel?
Yes, it is constructed from heavy-duty steel for strength and longevity.
Troubleshooting
Chain skipping or poor engagement
Ensure you are using an 8-speed chain. Check chain tension and adjust if necessary. Verify that the sprocket is correctly seated on the freehub body.
Sprocket does not fit freehub body
Confirm that your freehub body is a Shimano HG pattern. This sprocket is not compatible with XD, Micro Spline, or other freehub standards.
Premature wear on sprocket or chain
Clean and lubricate the chain regularly. Avoid using chains outside the recommended speed range (5-10 speed) for extended periods, especially those significantly different from 8-speed.
Pros and Cons
Pros
- Durable and robust steel construction.
- Easy conversion to a single-speed drivetrain.
- Wide compatibility with different chain speeds (5-10).
- Reliable performance on Shimano HG freehub bodies.
Cons
- Fixed 12-tooth size offers no gear ratio adjustment.
- Requires separate chain tensioner for optimal performance if used with certain setups.
- Best performance is dependent on using an 8-speed chain.
Setup, Compatibility & Care
Setup:
- Ensure your freehub body is a Shimano HG pattern.
- Install the 12-tooth sprocket onto the freehub body, ensuring it sits flush.
- Select and install an 8-speed chain for optimal performance. Other chains (5-10 speed) will work, but may not be as efficient or durable.
- Adjust chain tension appropriately using your frame's dropouts or a chain tensioner if necessary.
Compatibility:
- Freehub Body: Shimano HG pattern only.
- Chain: Compatible with 5 to 10-speed chains. 8-speed chains are recommended.
Care:
- Clean regularly with a degreaser and brush to remove dirt and grit.
- Lubricate the chain frequently.
- Inspect for wear and replace if significant teeth wear is observed to prevent chain skipping.