# Seismic - 85mm Speed Vent

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

**Specs:**  
Diameter: 85mm  
Width: 52mm  
Contact Patch: 52mm  
Durometer: 78.5a, 79a, 80a  
Lip Profile: Sharp  
Core Placement: Offset  
Wheel Surface: Smooth

The very fastest wheel in the world - used by Joel King of England to set a Guinness World Record of 114.7 mph on a jet-powered luge! The 85mm Speed Vent is molded around our proprietary weight-saving Energy Conversion Core – possibly the raciest, sexiest core on the market. The 85mm diameter gives it the roll speed of a downhill wheel, while the weight-saving core adds the quickness and agility of a smaller wheel, as well as enhanced rebound. Combined with lips designed for pure grip, the 85mm Speed Vent is utterly unique among high-end wheels. Breakthrough performance for longboarding, downhill, GS, and even Hybrid slalom.

## Details

- **Price:** 838.0 HKD - 868.0 HKD
- **Vendor:** Seismic
- **Type:** Wheels
- **Tags:** 75a, 77a, 78.5a, 79a, 80a, 85mm, Downhill Wheels, LDP wheels, Round&Beveled, Seismic, Ungrounded, Wheels

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| 75a (Clear Blue) | 838.00 HKD | In stock |
| 77a (Purple w/ Clear) | 838.00 HKD | In stock |
| 79a (Purple w/ Blackops) | 838.00 HKD | In stock |
| 77a (Bubblegum w/ Defcon) | 868.00 HKD | In stock |
| 78.5a (Mango w/ Defcon) | 868.00 HKD | In stock |
| 80a (Mint w/ Defcon) | 868.00 HKD | In stock |

## Images

- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent
- Seismic - 85mm Speed Vent

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> Source: [SBDW Longboards Hong Kong](sbdwlongboards.com/products/seismic-85mm-speed-vent-75a-77a-78-5a-79a-80a)
> Updated: 2026-06-08