# Seismic - 68mm Tantrum

## **\*\*DIFFERENT FORMULAS WITH DIFFERENT PRICES\*\***

**Specs:**  
Height: 68mm  
Durometers: 78a, 80a, 81a  
Formula:  
79a (Blackops)  
78a/ 80a (Defcon)  
81a (Clear)  
Contact Patch: 31mm  
Hub Setting: Center Set  
Edges: Round  
Disciplines: Freeride, Freestyle, Cruising

Our beloved Cry Baby wheels grew up, went to college, and became the Tantrums: _the lightest and most functional freeride wheels of their size on the market!_

The 68mm by 43mm Seismic Tantrum is molded around the special “fin-trimmed” version of our proprietary weight-saving Energy Conversion (EC) hub – the first tall, wide hub seen in longboarding and still second-to-none.

The big, airy, fiber-reinforced hub combines with perfectly-refined proportions, superbly-supported radiused edges, and our advanced urethanes for a truly progressive freeride experience:  
• quick acceleration  
• slide release and hookup that are always easy to read  
• vibrant ‘thane lanes  
• consistent wear

_**Available in TWO proprietary formulas, with finely-tuned durometer choices.**_  
**Defcon**™: thoroughbred race ‘thane • Guinness WR speed • directional slide • long-lasting grip • slow, consistent wear  
_• 78A Mango: Vice-like grip and very snappy directional slide, with plenty of slowdown power._  
_• 80A Mint: Very stiff edges that give loads of grip with a friendly slide and crisp hookup. Ideal for smooth roads and lighter riders._  
**Premium Clear**™: the best beautiful clear urethane in the world_  
• 81A Crystal Clear Blue: Smooth, fast, and grippy._

## Details

- **Price:** 558.0 HKD - 638.0 HKD
- **Vendor:** Seismic
- **Type:** Wheels
- **Tags:** 68mm, 78a, 80a, 81a, Cruising wheels, Freeride wheels, Freestyle wheels, Round&Beveled, Seismic, Stone-grounded, Ungrounded, Wheels

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 78a Defcon (Mango) | 638.00 HKD | In stock |
| 80a Defcon (Mint) | 638.00 HKD | In stock |
| 81a Clear (Clear Blue) | 558.00 HKD | In stock |

## Images

- Seismic - 68mm Tantrum

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> Source: [SBDW Longboards Hong Kong](https://sbdwlongboards.com/products/seismic-68mm-tantrum-78a-80a-81a)
> Updated: 2026-04-20