Specs:Length: 73.8 cm / 29.4"
Width: 21.3 cm / 8.79"
Construction: 7-Ply maple
Setup:Trucks: Santa Cruz 140mm
Wheels: Santa Cruz65mm 78A
Bearings: Abec 5
Duro's: 70A, 75A, 80A, 85A, 87.5a, 90A, 95A, 97.5A
Each quantity of 1 purchased is a single bushing.
You have 2 trucks per skateboard, & each truck takes 2 bushings.
So for a complete skateboard, you need to buy a quantity of 4.
Duro's: 60A, 62.5A, 65A, 67.5A, 70A, 75A, 80A, 85A, 90A, 95A, 97.5A
Each quantity of 1 purchased is a single bushing.
You have 2 trucks per skateboard, & each truck takes 2 bushings.
So for a complete skateboard, you need to buy a quantity of 4.
With few exceptions, many skate brands simply act as "tourists" in the bearing industry, sourcing average products from third-party brokers or small producers, often without meaningful input on engineering and manufacturing specifications. The technical world of bearings can be complex, allowing unscrupulous brands to make oversimplified or exaggerated claims.
At Seismic, we have been dedicated to advancing skate bearing technology since 2011, mining the science and facts to deliver superior products. We provide you with the honest, reliable information you need.
DimensionsLength: 80 cm / 31.5”
Width: 25.4 cm / 10”
Wheelbase: 41.9 cm / 16.5”.
Construction: 7 Ply Canadian Maple .
Gripped: No.
NOTE: grip tape not included and must be ordered separately.
Diameter: 68mm
Durometer: 78a (mango), 79a (Yellow or Blue), 80a (mint), 81a (crystal clear blue), 82a (green)
Width: 43mm
Contact patch: 31mm
Core position: Centerset
Usage: Freeride
Edge shape: Rounded
Our Description:
The Seismic Tantrum is a purpose built freeride wheel that offers fast roll speed, smooth slides, and solid durability. Seismic opted for a weight saving plastic core that makes this wheel one of the lightest freeride wheels on the market.
Duro's: 70A, 75A, 80A, 85A, 87.5a, 90A, 95A, 97.5A
Each quantity of 1 purchased is a single bushing.
You have 2 trucks per skateboard, & each truck takes 2 bushings.
So for a complete skateboard, you need to buy a quantity of 4.