Spring rate Front: 7 kg/mm(392 lbs/in)

Spring rate Rear: 6 kg/mm (336 lbs/in)

Spring length Front: 200 mm

Spring length Rear: 160 mm

Spring Preload advised: 7-10 mm

Camber adjustable: Not available

Package included：

2x Front coil-overs

2x Rear coil-overs

2x C spanners

1x Allen wrench

Features:

1. Self-design structure and new manufacturing system to give more customers good coil-overs without breaking the bank.
2. Height adjustable---lower your car 25-75mm (depending on vehicle models) to get a performance ride
3. Independent Ride Height and Spring Pre-load Adjustments
4. Twin-Tube System for Comfortable Ride on Streets
5. Coated finish to avoid rust
6. Heavy Duty Steel Lower Mounts
7. Simple install,  easy to adjust.

Notice

1. All modifications must be installed by licensed mechanics and in compliance with your local modification regulations.
2. Please ensure all components are tightened with correct torque specifications (which can be found in the vehicle service manual)before and after installation. Any loose nuts, bolts, or locks will cause noise. Do check and tighten before serious problems happen. 
3. Impact wrench is prohibited during the installation, it will loosen or damage the product.
4. Examine the clearance between tires and suspension. ( The minimum clearance should be 4mm, otherwise, you need to add wheel spacers. Caution: It is not sufficient with torsion beam trailing arm axles)
5. We suggest regular maintenance for the coil-over, spray with some WD40 every 3-4 months will keep it smooth and clean, which helps to extend the lifetime.