Buell X1-S3 Fi 99-02 Sparkplug wire set 7 mm Black 

ELECTROSPORTS 70 CABLE

Direct replacement for 7mm original equipment carbon conductor leads with excellent RFI and EMI suppression. Overcomes problems associated with limited-life carbon conductors and poorly suppressed aftermarket spiral conductor leads on modern engines. Extreme strength, high temperature resistant silicone rubber jacket and high dielectric strength internal silicone insulator bonded by tape to outer jacket for superior terminal retention.

for the Blue 8 mm cables see here