Application:

Compatible for BMW Z4 Roadster (E85) (2003-2009)  2.0 i,3.0 i,2.5 i,3.0 si, 2.2 i,2.5 si
Compatible for BMW Z4 Coupe (E86) (2006-2009) 3.0 si

Upgraded version on:

The structural changes of the adjustment knob and the spring upper, The piston rod structure changes, making it easier to disassemble Do not fit for AWD model

Specification:

Quantity:2 piece front + 2 pieces rear 
Front top mounts: pillow ball top mounts
Rear : rubber top mounts
Damping: 24 levels rebound damping adjustable
Spring rate Front: 10 kg/mm (560 lbs/in)
Spring rate Rear: 8kg/mm (448 lbs/in)
Spring length Front: 180mm
Spring length Rear: 170mm
Adjustable height: lowering 1-3inch
Coilover overall length Front: 360mm-495mm
Coilover overall length Rear: 485mm-585mm
Shock type: Twin tube
Spring Preload: 7-10 mm
Color: gold
Warranty:one year warranty for any manufacturing defect

Feature:
1. Lowered height adjustment from 1”-3” which allow lower center of gravity and also add a more aggressive stance
2. A 24 rebound damping adjustment level allows you the ability to perfectly dial in your coilover setup. You will experience better ride quality in all road conditions.
3. Twin-Tube structure allows sufficient stroke within the shock absorber
4. Separate height adjustment does not affect damper stroke
5. High Tensile performance spring – STRESS TESTED OVER 600,000 times while the spring distortion is less than 0.04%. Plus, the special surface treatment improves the durability and performance.
6. Height Adjustment tools included
7. Camber plate top mounts help to eliminate the need for a separate camber kit
8. Pillow ball top mount – It improves the steering feel and response
9. Most pieces in our Coilover systems, including mounts, collars and spring perches, are designed from 6061-T6 Billet Aluminum resulting in lightweight, durable and rust resistant components.
10.Full rebuildable

Notice :
– Hi-performance aftermarket parts; Instruction Included. (If not, we could offer you the E-book version. ); professional installation is suggested.
– Please feel free to contact us for whatever we can help.