Exotek F1 Ultra Rear Spring Set EXOR4049

Exotek F1 Ultra Rear Spring Set. These springs may be used to fine tune your chassis to various track conditions. Package includes one replacement upper rear spring, two lower rear springs, plus four optional lower rear springs. 

Features:

• EXOR4049 Top Black Springs
• EXOR4066 Lower Black Springs
• EXOR4123 Lower Yellow Springs
• EXOR4123 Lower Blue Springs