Active filters
Designed for direct OEM replacement and manufactured in the USA. Restores charging performance and reliability.
High-performance plug wires with precut lengths and preinstalled boots and terminals for easy installation.
Precut spark plug wire set with boots and terminals installed for quick fitment; high-temp silicone and Spiro-Pro core for superior conductivity and longevity.
Designer, precut plug wire set with high-temperature silicone boots and a Spiro-Pro core for superior conductivity and long life.
Precut designer spark plug wires with high-temp silicone boots and Spiro-Pro core for superior conductivity and durability.
High-visibility, precut silicone spark plug wire kit with preinstalled boots and terminals.
Spiro-Pro core delivers superior conductivity and longer life; suitable for electronic and point ignitions. Made in the USA.
Precut, extra-high-temperature silicone spark plug wires with Spiro-Pro core for superior conductivity and durability. Made in the USA.
Designer plug wire sets precut with installed boots and terminals for easy fitment; Spiro-Pro core for superior conductivity and longer life.
Voltage control for Harley-Davidson and Buell alternators that reduces stator current and operating temperature. Made in the USA.
Controls voltage on Harley-Davidson and Buell alternators to reduce stator current and temperature, extend battery life, and improve efficiency. Made in the USA.