Evotech Performance has developed an innovative spindle bobbin system which allows the bobbin head to rotate on impact. This is down to the aluminum spacer system that provides a solid core for the location of the nylon bobbin head. Using this system we have increased the overall durability and impact resistance of our spindle bobbin kits. The front spindle bobbins are retained by roll threaded stainless steel spindles for increased strength. The spindle bobbin kits comprise of two nylon bobbins, two anodized aluminum spacers, S/Steel spindle, nuts, washers and a hollow spindle nut. Made from high performance engineering materials in order to protect your expensive fork bottoms and brake calipers in the event of a spill.