# Seismic - 78mm Blast Wave

**Specs:**  
Height: 78mm  
Durometers: 77a, 78.5a, 80a  
Contact Patch: 50mm  
Hub Setting: Off Set  
Edges: Dual  
Disciplines: Downhill, Long Distance Pushing

78mm tall x 50mm wide Blast Wave Wheels.  
  
Offset bearing seat, dual lip design.  
6.8 oz. each.  
  
Poured in Defcon™ urethane.  
  
Sold in sets of FOUR wheels.  
  
The Seismic Blast Wave is 78mm tall by 50mm wide, with a radiused outer lip for high grip with controlled sliding. It’s molded around the full version of our proprietary Energy Conversion (EC) hub, making it astoundingly light for a wheel of this size. Superb grip, smooth drifts and buttery hookup make it truly a “blast” to ride! Destined to rewrite the book on the versatility of tall wheels.

## Details

- **Price:** 758.0 HKD
- **Vendor:** Seismic
- **Type:** Wheels
- **Tags:** 78a, 78mm, 79a, 80a, Downhill Wheels, LDP wheels, Round&Beveled, Seismic, Ungrounded, Wheels

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 77a (Bubblegum) | 758.00 HKD | In stock |
| 78.5a (Mango) | 758.00 HKD | In stock |
| 80a (Mint) | 758.00 HKD | In stock |

## Images

- Seismic - 78mm Blast Wave

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> Source: [SBDW Longboards Hong Kong](https://sbdwlongboards.com/products/seismic-78mm-blast-wave)
> Updated: 2026-04-20