Unless your Daewon Song, having all the parts for your bushings is a must! Daewon from memory once just ran two top washes on his front truck minus the bushing haha

Spec's

Replacement Part by Mini Logo for the Bottom Washer (deck side washer when riding board, touches the base plate)
Size:
   Outer Diameter: 28mm
   Inner Diameter: 9mm
   Height: 4mm

Mini Logo

Mini Logo doesn’t sponsor skaters, but there are now numerous Official MILITANTs around the world that are down to ride Mini Logo, hype up the product and promote the movement. It's time for a new grass roots presence in skateboarding and the MILITANT movement reminds us why we skate in the first place.