Spyke 32 AMP Charging System CHR for Harley Big Twin 70-99 Features a forged steel rotor with a thicker spline for maximum engagement on even the biggest of motors Magnets are encapsulated in a protective barrier to resist vibration-related breakage and prevent costly damage Kit includes a high-performance stator and voltage regulator in chrome or black Fits 70-99 Big Twin Evolution 32 AMP