Stable-Turn 30° geometry
Yellow Extra-Light springs (with revised, fully-progressive rate profile!)
Recommended for: narrow street & downhill boards; rear of tight slalom boards
![Image](http://www.ncdsa.com/seismic/AvailableNow/105/30.jpg)
Seismic 105mm aluminum trucks (6.8" axle)
Quick-Turn 45° geometry
NEW Bright green Super-Light springs (one step softer than yellow Extra-Light!)
Recommended for: narrow longboards; front of tight slalom boards
![Image](http://www.ncdsa.com/seismic/AvailableNow/105/45.jpg)
Seismic 180mm aluminum trucks (9.8" axle)
Stable-Turn 30° geometry
Red Light springs (with revised progressive rate profile!)
Recommended for: wide vert boards; rear of wide pool/park boards; downhill boards
![Image](http://www.ncdsa.com/seismic/AvailableNow/180/30.jpg)
COMING SOON:
- Quick-Turn 180s
- 130s and 155s in both geometries
- New metal coil spring strengths: Bone Max-Light, Bright Green Super-Light, Blue Extra-Heavy, and Black Super-Heavy
- Urethane dampening springs in multiple color-coded strengths
- Completely revised and updated website
All aluminum Seismic trucks feature:
- Both New School and Old School Mounting Holes
- Hangers, springs and hardware compatible with either baseplate (Quick-Turn 45° or Stable-Turn 30°)
- Low-friction hanger bearings from the original early-1990s German supplier
- Bulletproof kingpin fastening with secondary safety clip
- Kingpin shoulder recessed inside baseplate for greater strength
NOTE: The entire Seismic spring system has been reengineered for a larger range of spring compression / hanger articulation. Therefore, springs from composite trucks made before 2003 should NOT be installed in the new aluminum trucks.