Sold as a set of 4 wheels.
Contact Patch: 43mm
Bearing Hub: Center Set
Lip Profile: Rounded
The Seismic Tantrum takes the EC (Energy Conversion) and tweaks it with a special "Fin Trimmed" version. This still give you the solid wide core while saving weight.
This wheel currently comes in two urethane formulations.
78a Mango DEFCON: Stoneground, with a super fast roll speed, smooth consistent slides, with a defined easy realease
81a Mint DEFCON: Stoneground, with a super fast roll speed, minimal grip, and ultra-smooth slide
81a Premium Clear: Fast rolling initially grippy wheel, that breaks in to a sugary slide when the skin is worn off.