Firewire Boss Up 2025
Midlength / funboard. 7 sizes from 6'6" to 7'6", 40 to 51 liters, listed by Firewire / Slater Designs. In stock from $1,255.
Every size and price
| Size | Liters | Price | Store |
|---|---|---|---|
| 6'6" × 20 1/8" × 2 7/8" I-Bolic Core with Fiberglass Lamination / Grey | 39.5 | $914 sold out | Firewire / Slater Designs |
| 6'6" × 20 1/8" × 2 7/8" I-Bolic Core with Volcanic Lamination / Volcanic | 39.5 | $1,125 sold out | Firewire / Slater Designs |
| 6'8" × 20 1/4" × 2 7/8" I-Bolic Core with Fiberglass Lamination / Grey | 40.8 | $960 sold out | Firewire / Slater Designs |
| 6'8" × 20 1/4" × 2 7/8" I-Bolic Core with Volcanic Lamination / Volcanic | 40.8 | $1,125 sold out | Firewire / Slater Designs |
| 6'10" × 20 3/8" × 2 15/16" I-Bolic Core with Fiberglass Lamination / Grey | 43.0 | $980 sold out | Firewire / Slater Designs |
| 6'10" × 20 3/8" × 2 15/16" I-Bolic Core with Volcanic Lamination / Volcanic | 43.0 | $1,255 sold out | Firewire / Slater Designs |
| 7'0" × 20 7/16" × 2 15/16" I-Bolic Core with Fiberglass Lamination / Grey | 44.3 | $1,000 sold out | Firewire / Slater Designs |
| 7'0" × 20 7/16" × 2 15/16" I-Bolic Core with Volcanic Lamination / Volcanic | 44.3 | $1,255 | Firewire / Slater Designs |
| 7'2" × 20 1/2" × 3" I-Bolic Core with Fiberglass Lamination / Grey | 46.4 | $1,010 sold out | Firewire / Slater Designs |
| 7'2" × 20 1/2" × 3" I-Bolic Core with Volcanic Lamination / Volcanic | 46.4 | $1,255 sold out | Firewire / Slater Designs |
| 7'4" × 20 7/16" × 3 1/16" I-Bolic Core with Fiberglass Lamination / Grey | 48.4 | $1,040 sold out | Firewire / Slater Designs |
| 7'4" × 20 7/16" × 3 1/16" I-Bolic Core with Volcanic Lamination / Volcanic | 48.4 | $1,255 | Firewire / Slater Designs |
| 7'6" × 20 5/8" I-Bolic Core with Fiberglass Lamination / Grey / L x 3 1 | 51.1 | $1,060 sold out | Firewire / Slater Designs |
| 7'6" × 20 5/8" I-Bolic Core with Volcanic Lamination / Volcanic / L x 3 1 | 51.1 | $1,255 sold out | Firewire / Slater Designs |
Open Firewire Boss Up 2025 in the finder →
One row per size and store. Liters marked ≈ are SurfCalc estimates (from the same model at other sizes, or from the dimensions). Prices are in the store's currency. Not sure which size? The calculator turns your weight, skill and waves into a liter range. More Firewire boards · Midlengths and funboards. Updated 2026-10-19.