Ross Performance Parts Nissan VG30ET Z31 (Pre-1987) Gold Series Harmonic Damper w Integrated 12T Crank Trigger Disc:

Top tier Gold Series Harmonic Damper
Rated for 1,000+hp
Ultra high-performance crank hub
Integrated 12 Tooth Crank Trigger
Water pump & Alternator pulley’s under-driven for protection at high rpm

Note: Race Series and Gold Series do not have provision for crank driven air conditioning or power steering. Electric power steering required.
Ross Performance Parts Nissan VG30ET Z31 (Pre-1987) Gold Series Harmonic Damper w Integrated 12T Crank Trigger Disc:

Top tier Gold Series Harmonic Damper
Rated for 1,000+hp
Ultra high-performance crank hub
Integrated 12 Tooth Crank Trigger
Water pump & Alternator pulley’s under-driven for protection at high rpm

Note: Race Series and Gold Series do not have provision for crank driven air conditioning or power steering. Electric power steering required.