Where it fits
This model is classified as Performance Fish. Use the documented family, selected size and intended conditions to decide whether that direction matches the surfer's brief.
Performance Fish
Rusty 421 Fish
This design is a versatile, high performance quad-fish, based on our popular 419 Fish. The 421 has evolved featuring a crowned deck, narrower nose...
Official manufacturer informationTypical surfer profile
Beginner to Expert surfer seeking a performance fish.
Wave direction
The available board information associates this model with beach break, open face, point break. Confirm the intended wave range with the manufacturer.
Where it sits in the design range
The 421 Fish sits in the Performance Fish family with a Performance Fish direction. Related models may solve a different design job even when their volume is similar.
Dimensions and volume
Available size range
5'10 to 6'6, 26.6L to 43.6L across the reviewed board specifications. The table below shows the complete available size range.
| Length | Width | Thickness | Volume | Construction |
|---|---|---|---|---|
| 5'10 | 20.88 | 2.37 | 34.7L | Standard |
| 5'11 | 21.00 | 2.40 | 35.9L | Standard |
| 5'3 | 20.00 | 2.03 | 26.6L | Standard |
| 5'4 | 20.13 | 2.06 | 27.5L | Standard |
| 5'5 | 20.25 | 2.09 | 28.4L | Standard |
| 5'6 | 20.37 | 2.13 | 30L | Standard |
| 5'7 | 20.50 | 2.18 | 31L | Standard |
| 5'8 | 20.62 | 2.25 | 31.9L | Standard |
| 5'9 | 20.75 | 2.30 | 33L | Standard |
| 6'0 | 21.13 | 2.43 | 36.7L | Standard |
| 6'1 | 21.25 | 2.47 | 38L | Standard |
| 6'2 | 21.38 | 2.50 | 39.1L | Standard |
| 6'3 | 21.34 | 2.52 | 40.1L | Standard |
| 6'4 | 21.50 | 2.56 | 41.2L | Standard |
| 6'6 | 21.75 | 2.62 | 43.6L | Standard |
Board design direction
- Public family
- Fish
- Detailed category
- Performance Fish
- Also suits
- quad
- Ability guidance
- beginner, progressing, intermediate, advanced, expert
- Fin configuration
- Twin, Quad
- Wave intent
- beach break, open face, point break, weak, average
- Strengths
- speed generation, paddle, wave entry
- Trade-offs
- hold, sensitivity
Guidance describes board characteristics, not a guaranteed performance outcome.
Board DNA
A compact view of how this board is designed to behave. Live stock and sizing remain the main purpose of this page.
- Paddle
- 7 / 10
- Speed
- 8 / 10
- Drive
- 7 / 10
- Release
- 7 / 10
- Hold
- 5 / 10
- Forgiveness
- 7 / 10
- Sensitivity
- 5 / 10
- Outline
- wide forward
- Rocker
- low entry / low tail
- Rails
- full
- Quiver role
- small wave, alternative daily driver
Quivrr Board DNA is derived from current manufacturer design information and governed Quivrr classification.
Check current regional availability
Stock is not baked into this page. Choose a region to run a current Quivrr search.
Other boards in this family
Related design guidance
How to choose a surfboard, understand volume and sizing, or ask Bodhi to explain trade-offs.
Quivrr Board Intelligence is generated from governed Board DNA, current board range information and manufacturer source information. Board information updated 2026-07-16. Confirm final specifications with the manufacturer or retailer.