The Riaction GT1 Coilovers for the 1984-1989 Nissan 300ZX Z31 deliver a premium, adjustable suspension upgrade built for drivers who want more from their 300ZX Z31 than the factory setup can offer. These Nissan 300ZX coilovers are engineered to pair street comfort with canyon and track capability, giving you the stance, handling, and adjustability you”ve been chasing without compromising daily driveability. Whether you track your Z31 300ZX on weekends or log daily miles, this Z31 coilover kit dials in ride height and damping to match how you actually use the car.
Every GT1 set features a monotube damper with 32 levels of damping adjustment, so you can tune ride quality to match the road, the weather, or your driving mood. Full-length ride-height adjustment separates preload from ride height — meaning you can drop the 300ZX Z31 to the height you want while preserving spring travel and shock stroke. Riaction coilovers for the 1984-1989 Nissan 300ZX are fully rebuildable and backed by a 2-year warranty, making the GT1 a long-term suspension investment rather than a disposable upgrade.
GT1 Series Technology
Features
Specifications
| Part Number | NS-056-ST |
| Part Name | Riaction GT1 Coilovers |
| Vehicle | 1984-1989 Nissan 300ZX |
| Chassis Code | Z31 |
| Adjustment Type | 1-Way |
| Ride-Height Adjustable | Yes |
| Spring Rate – Front | 12 Kg/mm |
| Spring Rate – Rear | 8 Kg/mm |
| Top Mounts – Front | OEM |
| Top Mounts – Rear | OEM |
| Camber Plates – Front | No |
| Camber Plates – Rear | No |
| Suspension Design – Front | True Coilover |
| Suspension Design – Rear | True Coilover |
| Notes | Front and rear Pillowball top mount |


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