This lower steel spacer, sized at 10mm x 4.5mm, is designed for the bottom of the spindle. It acts as a crucial spacer between the lower pill and the 10mm locking nut, ensuring smooth and stable operation in your karting setup.

Using this washer is quite simple. First, locate the bottom of the spindle in your kart. Place the 10mm x 4.5mm washer there. Then, put the lower pill on top of the washer, followed by the 10mm locking nut. Make sure it's all snug but don't over - tighten the nut as it could damage the parts. For maintenance, regularly check the washer for any signs of wear or damage. If it looks worn out, replace it right away to keep your kart running well. Also, keep it clean from dirt and debris to extend its lifespan.