• ACCEL C-Cut Copper Spark Plugs creates a considerably hotter spark that lets the flame expand more rapidly in the combustion chamber
• Allows spark to expand directly above the midpoint of the electrode core – preventing the spark from being shrouded by the ground strap.
• Gives the flame an unblocked area to grow – creates a larger flame front for a more complete burn.
• Reduces excess heat absorption of the electrode and ground strap, also known as the “quenching effect”, which leads to misfiring, rough idle and overall poor performance.
• Produces a larger spark nucleus without having to increase the spark gap.
• Creates a more complete burn of the air-fuel mixture resulting in -Increased performance, improved throttle response, greater fuel efficiency and reduced emissions.

ACCEL has improved the ignitability of the spark plug in a new design! ACCEL has always utilized unique electrode grounding designs to improve combustion and create a larger spark.

• The Copper core is a better conductor than Iridium or Platinum plugs
• Creates a considerably hotter spark that lets the flame expand more rapidly in the combustion chamber
• Provides a more complete and efficient burn of the air/fuel mixture
• Copper dissipates heat much better than other materials
• Instant throttle response
• Reduced fouling and misfire
• Minimized flame dissipation
• Machine-rolled threads protect your valuable cylinder heads
• Whether using on the street or on the strip, ACCEL HP Copper Core spark plugs deliver!