Reliable spark plug with improved head dissipation, standard U-groove and heat-resistant nickel jacket.
Electrical & Ignition

Active filters
Delivers full battery voltage to single-fire coil during cranking. Sealed 30 A unit with high-temp housing. Compact 1.5" x 1" x 1" with mounting flange.
Professional heat-shrink tubing, 3:1 shrink ratio, water-tight seal and wide operating temperature range.
Professional-grade shrink tubing with 3:1 shrink ratio for water-tight seals; operates from -67°F to 275°F. Apply with heat gun at 120°F–180°F.
Combines old and newer data port styles. Includes 4-pin, 6-pin and OBD connectors; compatible with '01–'23 models. Made in the USA. For use with TR4 VCMs only.
Fine-wire iridium construction for reliable starts and long service life; tapered ground electrode with U-groove improves combustion efficiency.
Classic-look replacement ignition coil that boosts spark output and improves throttle response. Made in the U.S.A.
Extended harness simplifies handlebar swaps. Color coded for OEM match. Measures 36". Made in the U.S.A.