Seismic TEKTON Bearings are a built in style bearing meaning that the bearing requires no spacers or speed rings. This is a rider favorite because it cuts down the performance pieces inside of a bearing from 5 down to just 2. Which makes TEKTONS easier to keep track of, easier to rotate and change wheels, and more sturdy than typical bearing systems. TEKTONS are over-built to maintain great performance months into riding and hold up to tough skating. Besides the convenience of TEKTON built in bearings, the performance increase of slop-free bearings will make your slides cleaner and more consistent.
SEISMIC states about TEKTON 7 Ball Bearings-
Breakthrough self-aligning design corrects for flaws in bearing seat levelness, bearing seat spacing, axle diameter and axle straightness.
Seismic® Tekton bearings feature wide, flat contact surfaces at the ends of integrated, custom-machined half-spacers. The broad flanges square up, co-align and self-stabilize inside your wheels – correcting for flaws in bearing seat levelness, bearing seat spacing, axle diameter and axle straightness.
The Tektons literally block themselves from sitting or rocking out of alignment, so they stay straighter than any other bearing system ever. Your wheels roll faster with better control, while the bearings last longer and stay quieter.
Other features include: top-grade P4 steel balls, nylon retainers, black outer casing, removable rubber-coated steel seals with printed graphic, and high-end Japanese Kyodo grease. Construction meets or exceeds requirements for ABEC-7 rating.
The inner race is stepped underneath the seal to resist contamination, and it’s stepped between the bearing and the flange to save weight. On the side opposite the flange, the inner race extends 0.5mm to form a thin integrated washer. No bearing spacers, axle washers, or World Record budgets required!