Seismic Defcon Barrel Bushings Standard

Seismic Defcon Barrel Bushings Standard
Seismic’s Defcon ultra-high-rebound urethane has a remarkable set of unique and highly-advanced properties – and now we’ve applied it to bushings! Defcon is the fastest wheel formula in the history of skateboard racing – credited with virtually every significant world distance and speed record, including the official Guinness Standup mark. (Pete Connolly, 91.17 mph / 146.73 kph – Sept. 16, 2017, at The Top Speed Challenge in Quebec, Canada.)

A major step forward in bushing performance

• Deeper lean and truer, more fluid steering with less lateral hanger slop!
• Highly-energetic yet smooth and controlled return-to-center
• Larger compression range compared to other bushing formulas in the same duro – No premature packing • Fuller wheel contact (less “outside wheel lift”)
• Smoother, more linear resistance profile – Consistent feel • Advanced control

Fine-tuned dimensions for high-performance fit!

• Full 1.0-inch outer diameter optimizes seating in bushing pockets of finer modern hangers.
• Inner diameter carefully calibrated for snug fit on standard kingpin shafts.
• Mold-top ends precisely machined for exact height and superior flatness. – No warped end surfaces.
• Minimal radius on mold-bottom edges, and zero radius on mold-top edges. – Fuller contact with bushing seats and washers.

Precision-fit height: Standard
0.60-inch (15mm): Optimal height both Board-Side (BS) and Road-Side (RS) for many modern longboard trucks, especially those assembled with BS washers. (e.g., Bear, Caliber, Paris, Don’t Trip Poppy / Slalocybin, 161)

Note: Defcon bushings may feel slightly softer than comparable duros from other brands using more basic urethane formulas. For optimal bushing performance, do not under-tighten or over-tighten kingpin nuts. Replace bushings that show signs of excessive wear, weathering, or aging.

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