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Seismic Alpha 80.5mm 78a Defcon Wheels - Mint (Set of 4)

Regular price $ 102.00 | Save $ -102.00 (Liquid error (sections/product-template line 192): divided by 0% off)
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Seismic Alpha 80.5mm 78a Defcon Wheels - Mint (Set of 4)

61mm DH - $ 102.00
  • 55mm LDP
  • 61mm DH - $ 102.00

PRODUCT DETAILS

Seismic Alpha Wheels 80.5mm tall. Optimal balance of momentum, efficiency, and grip for pushing and pumping speeds! A highly-optimized balance of properties for modern racing. The fastest urethane that the skateboard industry has ever seen, bar none. The largest and most supportive hub ever seen in a wheel this size. Size and momentum to carry you past the competition in straightaways, yet agile enough for quick acceleration, fast edge-to-edge adjustments, and snappy technical pre-drifts. Available in DEFCON ultra-high-rebound formula. Vice-like grip and very snappy directional slide, with plenty of slowdown power. Ideal for aggressive racing.

A highly-optimized balance of properties for modern racing

  • Size and momentum to carry you past the competition in straightaways – yet agile enough for quick acceleration, fast edge-to-edge adjustments, and snappy technical pre-drifts. Welcome to a whole new realm of FAST!
  • Finely-calibrated width and supremely supported edges for smooth, predictable handling through even the hardest corners.
  • The very fastest urethane that the skateboard industry has ever seen, bar none.
  • Named after the Greek letter “alpha” (α), used in science to represent rotational acceleration.

A giant step forward in race wheel engineering

  • Stout S-shaped edge profile optimizes lip support, maximizes traction under extreme G’s, and ensures predictable slide initiation and hookup.
  • Running surface features a 0.5mm concave that pre-loads edges, heightens rebound, and enhances in-slide feedback.
  • Bearing seat offset 3.5% – 6.5% for progressive lip engagement and more consistent wear.

The Fusion core – integrating 15 years of advanced hub R&D

  • 46mm tall x 44mm wide – the largest and most supportive hub ever seen in a wheel this size.
  • Deep, wide “saddle” profile regulates lateral wheel flex, supercharges edge support, and ensures absolute mechanical lock with the urethane.
  • 8 lateral support beams (hollowed-out for lightness and aesthetics) form wide ridges that create unprecedented circumferential lock and rebound.
  • Robust bearing lugs.
  • Formed from 85D fiber-reinforced thermoplastic – the toughest hub material in the industry.

Available in DEFCON ultra-high-rebound formula, in three finely-tuned durometer choices

Thoroughbred race ‘thane • Guinness WR speed • directional slide • long-lasting grip • slow, consistent wear

  • 74A Plum (Aaron Hampshire pro signature wheel): Plush, velvety roll with extra edge hold, even on rough roads. Aggressive yet smooth slide with faster braking.
  • 76A Mango: Vice-like grip and very snappy directional slide, with plenty of slowdown power. Ideal for aggressive racing.
  • 78A Mint: Very stiff edges that give loads of grip with a friendly slide and crisp hookup. Ideal for smooth roads and lighter riders.

Available in TWO finely-tuned widths:

  • 80.5mm tall x 55mm wide LDP Trim
    • Optimal balance of momentum, efficiency, and grip for pushing and pumping speeds!
    • 51mm running surface
    • Bearing seat offset 6.5%
    • Beveled edges
    • 8.75 oz. each
  • 80.5mm tall x 61mm wide DH Race
    • Superior top-end roll speed, traction, and braking power… with surprising quickness and agility for a wheel of this heft!
    • 60.5mm running surface
    • Bearing seat offset 3.5%
    • Square outside edge, straight-cut inside edge
    • 9.125 oz. each

How to have more fun in the park

  • STEP 1

    Select your products and proceed to checkout using secure payment methods.

  • STEP 2

    Our team will carefully select your order from our warehouse and send it to you within 3-5 days

  • STEP 3

    Ramp up the fun in the park!

Why choosing us

Frequently Asked Questions

What is your return policy?
If you are dissatisfied with your order for any reason, you can return your items for a prompt refund or exchange (Items must be returned in unused condition within 30 days of the delivery date) Refunds for items returned within thirty days of the delivery date will be credited in the same form as the original payment type. The original shipping costs/card fees will be subtracted from the refund amount. If you have an exchange for the same dollar amount as the original purchase, no additional shipping or handling charges will be incurred. Please mail your package in a prepaid, insured, traceable method. For clearance and floor models, sales are final and products cannot be returned.
When can I expect to receive my products?
You can trust that your order will be quickly processed and safely delivered. We can ship products anywhere in the United States and World using the shipping method of your choice. When you place an order we will estimate delivery dates based upon the availability of your item(s), shipping method selected and your shipment’s destination. Our shipping charges are determined by the total dollar amount of your order.
Do you provide free shipping?
Yes. FREE shipping on orders over $50.
How can I track my order?
Once your order ships, you will receive an email with tracking information as well as update tracking emails until your order has been delivered.
What payment methods do you accept?
We accept all major credit & debit cards, Shop Pay, Apple Pay, Facebook Pay, Google Pay as well as PayPal & Sezzle.
Is my personal information kept private?
We respect your privacy. Any and all information collected on this site will be kept strictly confidential and will not be sold, disclosed to third parties or reused without your permission. Any information you give to us will be held with care and will not be used in ways that you have not consented to.

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