Double-dipped zinc chromate Exclusive 90° V-groove design assures a hot, clean spark for better performance V power plugs are designed to draw the spark to the edge of the electrode, minimizing the quenching and resulting in more complete, effective combustion.

• NGK RACING SPARK PLUGS
• P/N NGK-XR4
• STOCK# 5858
• BOX OF 4 PLUGS
• 14MM THREAD
• 3/8" REACH
• 13/16" HEX
• FLAT SEAT WITH GASKET 
• V-POWER
• POWER / PROJECTED TIP NON RESISTOR
• RACING TIP

Actual shipping charges and combined shipping. Canada & International shipping Extra.And additional time maybe needed to ship. Accepting Paypal. All sales final, as is race item.