HKS M45XL Spark Plugs

FREE SHIPPING WITHIN THE US! (These are NOW IN STOCK ready to ship)  Description: HKS M-Series Super Fire Racing spark plugs are high-performance Iridium plugs designed to handle advanced levels of tuning and provide Improved ignition performance, durability & anti-carbon build-up. Sold as (1) plug or a (4) pack. Pick from drop-down menu Compare our pricing to others who sell these plugs. We are happy to offer them cheaper, than anywhere else found in the US.   Features & Specs: 0.6mm Iridium Alloy Center Electrode: Iridium Alloy Center Electrode reduces voltage requirement as well as improving ignition performance and durability  Outer Electrode with Platinum Chip: The Outer Electrode incorporates a square platinum chip which improves durability, and when combined with the iridium center electrode boosts ignition performance  Short Type Outer Electrode (Anti-Vibration): The outer electrode has been shortened and engineered with the ideal shape to decrease weight for resi