maXpeedingrods T6 lowering coilover, standard with adjustable rebound damping, separate height adjustment without changing preload, developed damping oil and upgraded racing springs, adjustable camber plate（for some vehicles) and decent outlook , offers you more ability to tune your suspension on performance and gives your vehicle more impressive appearance. Besides, all our coilover are assembled in dust-free factory, which turns out good quality and long life.

Application:

For BMW Z4 Convertible / Roadster E85 2003-2009

    2.0 i, 3.0 i, 2.5 i, 3.0 si, 2.2 i, 2.5 si

For BMW Z4 Coupe E86 2006-2009 3.0 si

Specification:

Height adjustable: Yes, lowering 25-75mm depending on the vehicle models

Damping adjustable: Available, 24 levels of rebound damping force

Spring Rate Front: 10 kg/mm (560 lbs/in)

Spring rate Rear: 8 kg/mm (448 lbs/in)

Front spring inner diameter: 70.5 mm

Rear spring inner diameter: 62 mm

Spring length Front: 180 mm

Spring length Rear: 170 mm

Front top mount: Pillow ball

Rear top mount: Standard rubber

Camber adjustable: Not available

Shock type: Twin tube

Spring Preload: 7-10 mm

Warranty:2 years 

Package included

2x Front coilovers
2x Rear coilovers
2x Allen wrench
2x C spanners
1x sticker

Feature:

1. Lowered height adjustment from 25-75mm which allows a lower center of gravity and also adds a more aggressive stance 
2. Adjustable pre-load spring tension to reduce the shaking motion to a certain extent
3. 24 levels adjustable damper -- This allows you the ability to perfectly dial in your coil-overs system. For nice comfortable driving, set damping to full soft. For more spirited driving, set it to 16 clicks. For occasional track days, set it to full stiff.
4. CNC machined Aluminum  top mounts and lockers-- - excellent strength, and save weight
5. Heavy Duty Steel Lower Mounts--- Highly Durable & Reliable
6. Upgraded spring --- more than 600,000 times continuously test to assure its high tensile strength.
7. All inserts come with fitted long rubber boots--- To protect the damper better and be durable.
8. With a better-damping setting, you will get better performance and comfort at the same time.
9. Twin-Tube structure ---provides excellent handling & control characteristics for most driving conditions
10. Anti-corrosion Finish - Anodized Aluminum And Powder Coated Carbon Steel Parts
11. Test for the best---Every part was tested on our professional machine before being assembled and tested by our professional racers on the road.
12. Clean room assembled---maintain a higher level of accuracy and reliability.
13. Upgraded damper oil---make damping more stable and smooth in a wide temperature range.

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 3-5 months will keep it smooth and clean, which helps to extend the lifetime.