Chinook offers the 40% Carbon SDM. It's one of the most affordable masts available.
| Item | IMCS Stiffness | IMCS Bend Curve | Flex Type | Weight |
| 400cm | 19 | 63B / 77T | Constant Curve | 4.4 lbs. or 2.0 kg |
| 430cm | 21 | 63B / 77T | Constant Curve | 5.0 lbs. or 2.27 kg |
| 460cm | 25 | 63B / 77T | Constant Curve | 5.8 lbs. or 2.64 kg |
| 490cm | 28 | 63B / 77T | Constant Curve | 7 lbs. or 3.16 kg |