Quick Summary
The AUTES crankset is a purple, 42T single-speed bicycle crankset with 170 mm crankarms and a 104 BCD. The listing describes it for certain mountain, road, electric and folding bikes, and says it is not for multi-speed bikes. Check the exact drivetrain and crank interface before choosing it.
Key Details
| Detail | Product information and buyer relevance |
|---|---|
| Product type | Single-speed bicycle crankset; the stated multi-speed limitation is important when matching a bike. |
| Chainring | 42T, meaning 42 teeth. The listing also names 34T, 36T, 38T and 40T alternatives; this selection is 42T. |
| Crankarm length | 170 mm. Compare this measurement with the crank length required for the bike. |
| BCD | 104 BCD, the stated chainring bolt-circle measurement. Confirm that the bike’s interface matches. |
| Material and color | Aluminum alloy crankarm; purple. |
What to Compare Before Buying
Confirm that the bike uses a single-speed drivetrain. The listing describes fit for most single-speed mountain, road, electric and folding bikes, but those broad categories do not establish fit for every model.
Check the 104 BCD, 170 mm crankarm length and the bike’s crank and bottom-bracket interface against the part being replaced. Also consider whether a 42T chainring is the intended size for the existing setup.
Compatibility, Size and Fit
The listing mentions a positive-and-negative tooth pattern intended to keep the chain closer to the chainring and reduce the likelihood of chain drop. This is not a guarantee of chain retention. Confirm compatibility with the exact bike and drivetrain rather than relying on the general fit claim.
Choosing the Correct Version
This selection is the 42T purple version. Other tooth counts are listed as alternatives, so check the selected variant carefully if a different chainring size or color is needed. Confirm what components are included in the selected configuration before ordering, especially if replacing more than the crankset.
Before You Decide
Match the single-speed limitation, 104 BCD, 170 mm crankarm length and 42T chainring to the bike. If any interface or configuration detail is uncertain, confirm it for the exact bicycle before installation.
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