Seismic Megawatt 90x58mm 74A Mango (Defcon)

The Seismic Megawatt 90mm wheels (74A, Mango, Defcon) are high-performance longboard/e-skate wheels designed for high speeds, long distances, and efficient energy return. They are sold as a set of four wheels and are particularly suitable for LDP (Long Distance Push), ESK8, and high-speed longboarding.

1. Brand: Seismic

2. Model / Name: MEGAWATT 90mm

3. Size (Diameter x Width): 90 mm x 58 mm

4. Contact Patch / Running Surface: 53 mm

5. Hardness / Durometer: 74A (Mango) — "fast, smooth, grippy and lively"

6. Formula: Defcon™ (ultra-high-rebound urethane; Seismic's performance formula)

7. Core: TURBINE™ core – 53 mm (high) x 46 mm (wide), fiber-reinforced thermoplastic (85D)

8. Bearing seat offset: 8.6% Offset (progressive Lip-Engagement, even wear)

9. Lip profile: Outer lip radiused, inner lip beveled

10. Weight: approx. 11.0 oz (≈311.8 g) per wheel

11. Scope of delivery: Set of four (4) wheels

12. Recommended uses: Downhill, Long-Distance Push (LDP), E-Skate (ESK8), Cruising

13. Special Features:

    • DEFCON™ Urethane: extremely high rebound for better roll speed and energy efficiency

    • TURBINE™ Hub: large, supportive core with reinforced structure and improved mounting options for E-Board pulley adapters

    • Slow, even wear and predictable slide behavior