Seismic Bushings
 
Seismic bushings give more rebound and stability while skating, their durabillity is impressive and they have a consistent performance over a large range of temperatures. I have been skating on them since fall 2024 and I have been totally impressed by them.
 
More rebound earlier:  Seismic bushings give more rebound earlier. This makes wiggle pumps easier. This is impressive as I normally skate a fatcone barrel combination. A fatcone has more rebound by its shape. Still the seismic double barrel combination outperforms usual LDP bushings. 
More stable: They also feel more stable to skate. I noticed this especially when pushing through corners. The truck stays in the angle it needs to stay without feeling wobbly. Seismic bushings also hold the center better (It doesnt feel like your board is swimming side to side). 
Higher Durabillity: On top of all I noticed that they are more durable! Bushings are replacement parts. That being said I skated on the same bushings for over 4000km and only then started to feel a difference. What I have noticed aswell is that Seismic bushings don't shrink! Usually I have had it that bushings after constant use compress and stay a little compressed. I did not have this with seismic, allowing for a more true hanger position.
Consistent performance: Some bushings feel softer in the beginning. I did not have this with Seismic bushings
Temperature independent performance: My seismic bushings felt the same with 0 degree celsius as with 32 degrees celsius. I havent tested them over those temperatures but I assume they will perform great there too. That is pretty awesome!
 
Specs:
1.0" / 25.4mm width
15mm height