Midlength / funboard. 3 sizes from 6'4" to 6'10", 35 to 40 liters, listed by Rider Shack. In stock from $1,065.
| Size | Liters | Price | Store |
|---|---|---|---|
| 6'4" | ≈35.2 | $1,140 sold out | Rider Shack |
| 6'4" × 20" | ≈35.8 | $925 sold out | Rider Shack |
| 6'4" × 20" × 2 5/8" | 36.0 | $1,065 | Rider Shack |
| 6'8" | 39.0 | $975 sold out | Rider Shack |
| 6'8" × 20 1/4" × 2 11/16" | 39.0 | $975 sold out | Rider Shack |
| 6'10" × 20 3/4" × 2 5/8" | 40.0 | $1,180 sold out | Rider Shack |
Open Thunder Bolt Technologies Mid 6 Mini Full 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 Thunder Bolt Technologies boards · Midlengths and funboards. Updated 2026-10-19.