New 4 Pack of Champion RC9YC Spark plugs for Harley Davidson and others. This pack is setup for big twin Harley with dual plug heads, but will obviously work in other applications calling for the same plug.

967 Custom Cycles is an authorized dealer for Mid USA and I can be found on their dealer locator as well as facebook

First photo is reference and the second is that actual box of plugs you will receive

Weight: 0.42

Features of Spark Plugs:

Patented Resistor: High voltage semi conductor resistor for maximum EMI suppression, proven to be the most durable in the industry. Certified compatibility for use in modern computer controlled, distributorless ignition systems

Five Rib Near Diamond Hard Insulator: Patented, zirconia toughened alumina insulator for near diamond hardness. Five rib design increases strength 35% while insuring against ignition flashover and securing the plug boot seal

Rust Resistant Shell Finish: Zinc plated shell resulting in maximum corrosion resistance. Also serves as thread lubricant to aid in prevention of thread seizure

Triple Seal Assembly: Use of upper and lower metal gasket along with sillment seal provides strongest yet least stressful seal known to the industry. Eliminates spark plug failure due to heat or mechanical induced stress

Copper Core Center Electrode: Provides maximum heat dissipation and durability

Precision Rolled Threads: Conforms exactly to I.S.O. and S.A.E. standards as specified by all engine manufacturers, resulting in easy installation and removal

Champion Copper Plus

5/8" Hex Spark Plugs for socket clearance on the pushrod side

For use on Big Twin with Dual Plug Heads

14mm thread diamter & 3/4" reach

Package of 4, Cold Plug Champion # RC9YC

Flat rate shipping is for domestic

Please ask any questions prior to purchase and I will respond