Includes 16" and 7" wires with 90° plug boots and 180° (straight) coil boots. Ready to install. Comes with 500 ohm per foot resistance; delivering a greater spark energy to improve fuel burning efficiency for better mileage; more power and a smoother idle. The inner wire is a combination of A spiral helically wound aramid fiber conductor core for improved strength and durability. Boots come with vibration-proof double locking connections for a maximum in reliability. Will give excellent suppression of EMI (Electro magnetic) and RFI (Radio Frequency) signals to ensure the electronics on the bike will work flawlessly. Black double spring locking silicone boots offer a match to the wire color and help protect against high temperatures.