Go Kart Spindle Stems are interchangeable and allow you to choose between 5 different grades that vary in stiffness/flexibility to give you more options as you set up and tune your go kart chassis.
Reference Item #5 on Spindles & Spindle Hardware Assembly Drawing
|Blue||Soft||Less Front Grip|
|Standard (No Color)||Standard|
|Gold||Hardest||More Front Grip|