The Wheeltop CKM01-DM is a lightweight carbon mountain-bike crankset for 1x drivetrains. It combines UD carbon crank arms with an AL7075 aluminium spindle, a three-bolt direct-mount interface and a narrow-wide chainring for dependable chain control on rough terrain.
UD carbon crank arms
The unidirectional carbon-fibre crank arms keep weight down while providing the strength required for mountain-bike use. Their low-profile shape and understated finish suit XC, trail and lightweight mountain-bike builds.
AL7075 aluminium spindle
The CKM01-DM uses a 28.99 mm AL7075 aluminium spindle designed for DUB-compatible bottom brackets. It provides a practical balance of low weight and durability for off-road riding.
1x narrow-wide chainring
The narrow-wide tooth profile engages the chain securely and helps limit chain movement over uneven ground. It provides a simple and efficient setup for modern 1x mountain-bike drivetrains. A range of compatible chainring sizes is available aftermarket.
Three-bolt direct-mount interface
The three-bolt direct-mount interface attaches the chainring directly to the crankset without a separate spider, keeping the system simple and making it easy to fit a compatible aftermarket chainring.
Key features
- Unidirectional carbon-fibre crank arms
- DUB 29 mm AL7075 aluminium spindle
- Designed for 1x mountain-bike drivetrains
- Narrow-wide chainring tooth profile
- Three-bolt direct-mount chainring interface
- Compatible with 10, 11- and 12-speed drivetrains
- Compatible aftermarket chainrings available in a range of sizes
- 50 mm chainline
- 172 mm Q-factor
- ISO 4210-8 test standard
Technical specifications
| Brand | Wheeltop |
|---|---|
| Model | CKM01-DM |
| Crank-arm material | Unidirectional carbon fibre |
| Spindle | 28.99 mm AL7075 aluminium |
| Spindle length | 90.5–92 mm |
| Drivetrain configuration | 1x |
| Chainring | Narrow-wide |
| Chainring interface | Three-bolt direct mount |
| Drivetrain compatibility | 10-, 11- and 12-speed |
| Chainline | 50 mm |
| Q-factor | 172 mm |
| Crank lengths | Multiple options available |
| Replacement chainrings | Compatible aftermarket sizes available |
| Weight | 475 ± 10 g |
| Test standard | ISO 4210-8 |
