HKS Unused! Iridjiumupuragu (R50RE) set of two

Boroku little box, but has been opened, the contents are unused product. RE specially designed rotary engine types. R50RE 2 is equivalent to the 10th set of thermal value. (RX-2 is required in other longer count 7) and reduced voltage requirements, adopt durable iridium alloy center electrode while improving ignitability. Ignitability, durability and enhanced resistance to all of fog. Pull the engine performance tuning, also effective against the standard engine?

• Vehicle Model: FC3S/FD3S
• Model: R50RE