Thunder Trucks: Thunder Polished Inverted Skateboard Trucks Size:149 Knee pad has a butterfly

Knee pad has a butterfly closing system that allows for easy on & off

The fibers are structured to minimize lateral sliding

Koroyd® cylinders absorb and convert more kinetic energy

original cushions for superior stability

Thunder Trucks: Thunder Polished Inverted Skateboard Trucks Size:149 Knee pad has a butterflyOverview Axle Kingpin Style Inverted Kingpin Quantity Set of 2 Trucks Baseplate Style Standard Features Axle Kingpin Style Inverted Kingpin An inverted kingpin means the threads are in the trucks, meaning that even after prolonged grinding, you will always be able to tighten or loosen your trucks. Non Compatible Risers Risers from the following brands are not compatible with the baseplates of these trucks. Arbor, Diamond, Dooks, Girl, Independent,