OverviewSpeaking of car parts,a coilover is one of the single best things you can do to suppress the shock.Maxpeedingrods has always aimed to stay at the forefront of offering high performance coilovers in UK.This coilover is guaranteed to compatible for BMW E90 3 Series E91 Saloon Racing. The damper and spring are assembled as a unit prior to installation, and are replaced as a unit when either of the sub-components fails.You can enjoy comfortable riding experience in all road conditions. Application2006-13 compatible for BMW 3 Series E90 2WD Only Note: Not suitable for X-drive or M3 modelsSpecificationQuantity: 2 piece front + 2 pieces rear Spring rate Front: 8 kg/mm (448 lbs/in) Spring rate Rear: 8 kg/mm (448 lbs/in) Damper: Non adjustable Damper Adjustable height: Yes Adjustable camber plate: No Warranty: one year warranty for any manufacturing defectFeature- Able to lower ride height by 1\'\'-3\'\'; allows user to have a more aggressive stance.- The user can enjoy a comfortable riding experience in all road conditions.- Pillow ball top mount -- this design helps combat noise while tuning. It also improves the steering feel and response- Twin-Tube Shock design is used for low internal frictional resistance in order to increase efficiency and keep shock temps low.- Height adjustment does not sacrifice damper stroke length.- These coilovers are able to have their height adjusted without being taken out of the car.- High Tensile strength performance spring---Tested under a 600,000 time continuous compression test, the spring distortion was less than 0.04%. Plus, the special surface treatment improves the durability and performance.- Adjustment tools included in the kit.NoteNo instruction included; Professional installation alignment suggested. Please check our store for other auto parts you may be interested in. Please feel free to contact us for whatever we can help.