The Phase 5 Aku wakesurf board was the first surf style board introduced by Phase 5. The Aku is a fast, rail to rail, air boosting machine.
Size Chart
| Length (ft / in) | Weight Range (lbs) |
| 53" | Up to 185 |
| 58" | Up to 250 |

| Length (ft / in) | Weight Range (lbs) |
| 53" | Up to 185 |
| 58" | Up to 250 |
| Length (ft / in) | Weight Range (lbs) |
| 53" | Up to 185 |
| 58" | Up to 250 |
| Length (ft / in) | Weight Range (lbs) |
| 53" | Up to 185 |
| 58" | Up to 250 |