Details
- CNC-machined 6061-T6 aluminum with rounded tooth profile to reduce chain wear
Part Numbers
| Option | UPC | MPN |
|---|---|---|
| Black / 38t | 639266089834 | BX-CR144B38T-BK |
| Black / 40t | 639266089858 | BX-CR144B40T-BK |
| Black / 42t | 639266089872 | BX-CR144B42T-BK |
BOX Cosine Chainring
$49.95