These new double adjustable coil-overs have custom valving specifically for a Datsun 510. They offer, truly independent compression and rebound adjustment, 18 positions of rebound on one knob and 18 positions of compression on the other knob thus providing 324 valving options, one shock allows for the ultimate in fine-tuning for any application,

These new double adjustable coil-overs have custom valving specifically for a Datsun 510. They offer, truly independent compression and rebound adjustment, 18 positions of rebound on one knob and 18 positions of compression on the other knob thus providing 324 valving options, one shock allows for the ultimate in fine-tuning for any application, 100% dyno tested & are made in the USA.