How it surfs
Best matched with modern twin-fin shapes designed around the MR outline: Firewire Seaside, Album Twinsman, JS Black Baron 3, Lost Rad Ripper. Most of these boards are shipped or reviewed with MR TFX as the reference set.
Only sold in the FCS Original (Dual Tab) system. For FCS II boxes, the equivalent is the FCS II Modern Keel; for Futures boxes, the closest analogue is the Rasta or Machado twin.
Volume & sizing chart
Use the chart below as a starting point. Add half a litre if you are less experienced, subtract half a litre for a looser feel.
| Size | Volume | Rider weight | Best for |
|---|---|---|---|
| One size | Base 4.63" / Depth 4.87" (twin) + trailer | 60–90 kg | All |
How it compares
| Board | Best at | Wave range | Aggregate score |
|---|---|---|---|
| FCS MR TFX Twin+1 | Upright twin with drive | Waist to overhead | 9.4 |
| FCS II Modern Keel | Loose modern keel twin | Small to head-high | 9.2 |
| Futures Rasta Keel | Classic keel twin | Ankle to shoulder | 9.0 |
Verdict
The most historically significant fin template in surfing. The reference twin for any modern twin-fin board designed off MR's outline.
