Replacement Ton's Performance Iridium Spark plugs for Harley Davidson Twin Cam 1999 - 2017 // Sportster 1986 - present
Ton's IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast.
- Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark
- Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines
- Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
- Corrugated Ribs Prevent Flashover
- Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
- Copper Core Aids in Heat Removal
- Triple Seals Prevent Leakage
Spark plugs sold as set of (2).
Note: These plugs are not factory gapped. DO NOT GAP IRIDIUM PLUGS WITH A COIN OR DISC STYLE GAP TOOL. Attempting to gap Iridium plugs with any tool that contacts the center electrode will damage the electrode and void any warranty. Use a gap tool such as those combined with feeler gauges which has a fork or slotted prong that allows you to gently bend the 'L' shaped ground electrode to the proper gap. Most Harley models require a gap of .038 - .040 for electronic ignitions. Be sure to check your factory service manual.
Fitment:
| Twin Cam 88/96/103 | 1999-2017 |
| XL Sportster 883/1200 | 1986-present |