HKS Super Fire Racing Spark Plug M45i (M45i) Pro Set

Designed for high-performance ignition, this Super Fire Racing spark plug from HKS delivers precise, reliable sparks for spirited driving and track applications. The M45i Pro Set is engineered to support consistent combustion and improved throttle response in tuned engines, with the Super Fire Racing line known for motorsports-grade construction and dependable performance. Ideal for enthusiasts seeking a plug tailored to racing demands, this Pro Set complements performance builds where crisp ignition and repeatable starts matter.