Krux 8.25 K5 Hollow DLK Silver Downlow Skateboard TrucksKrux Trucks. We've Reached a new Low. Introducing the Krux K5 Downlow DLK with hollow axle, hollow inverted kingpin, and 51. 5mm axle height (3. 5mm lower than standard height Krux). The Downlow has the hole y trifecta of what you need in a truck; lightweight, hella grind clearance, and easy flipping with that lower contact point.