Accel U-Groove Spark Plugs 

Accel U-Groove plugs give you more of what you ride a performance bike for - horsepower. Featuring the U-groove ground electrode building a "ball of fire" flame for a smoother idle and more complete combustion. Five-rib "alumina" powder insulator to prevent flashover and misfire; copper glass inner seal and electric heat seal; fused copper/nickel center electrode providing a wide heat range. 

Note* All spark plugs come in packs of two!