Ross Performance Parts Nissan SR20 S13 Race Series Harmonic Damper with Integrated 36-2 Tooth Crank Trigger:

High-performance Race Series Harmonic Damper – Designed for a race application
Rated for 800hp
Integrated 36-2 Tooth Crank Trigger
Compatible with VE oil pump when using S13/S14/S15 crank spacer
Note: Race Series do not have provision for crank driven air conditioning
Ross Performance Parts Nissan SR20 S13 Race Series Harmonic Damper with Integrated 36-2 Tooth Crank Trigger:

High-performance Race Series Harmonic Damper – Designed for a race application
Rated for 800hp
Integrated 36-2 Tooth Crank Trigger
Compatible with VE oil pump when using S13/S14/S15 crank spacer
Note: Race Series do not have provision for crank driven air conditioning