Accel S/PLUGS U-GROOVE BT75-99

High-performance U-Groove spark plugs designed to deliver a hotter, more efficient spark for improved combustion and smoother engine operation on Evolution and late Shovelhead Big Twin models.

Features

• Patented U-groove ground electrode produces a wider, more intense spark

• Heavy-duty 5-rib insulator minimises flashover

• Copper/nickel alloy electrode for long service life

• Highly foul-resistant and provides superior heat dissipation

• Enhances engine efficiency and helps reduce emissions

• Improved throttle response with fewer misfires

Fitment

• Big Twin: 1975–1999