Spidertrax Pro Series 14 in. Rotor (5-1/2" BC Hat) If you're building a complete

If you're building a complete Spider 9

Gauge Size (in):2 1/16 in

Anyone who has seen twisted splines on a shaft that has not been machined down like ours knows first hand what a difference this can make

Quantity:Sold individually

Spidertrax Pro Series 14 in. Rotor (5-1/2" BC Hat) If you're building a completeUltra4 has grown well beyond the performance of those days of early racing. With that incredible growth, sometimes finding improvement in the parts you've come to rely and depend on requires not just a tweak here and there, but a full on re thinking of the materials an processed used to create it in the first place. Welcome to the next level of Ultra4 braking performance, now made possible with the all new chromoly heat treated Spidertrax Pro Series