Vauxhall Astra J MK6 Hatchback (2009 to 2015). 2.0 CDTi (Manual Gearbox Only). Vehicles with electronic and/or self-leveling suspension or height adjustment.High quality Chrome-Silicon powder-coated spring. Vehicles with factory fitted lowered suspension will not drop as much as stated in the above figures. Depending on the age and condition of your current springs the drop could be less. This Pro-Sport sports spring kit is designed to fit all models listed above fitted with OE spec wheels & tyres but some aftermarket combinations of wheels and/or tyres may require wheel spacers to be fitted. 2 x lowered sports front springs. 2 x lowered sports rear springs. In accordance with Pro Sport, instructions are purposefully not supplied with any of the kits as it would incorrectly give indication/suggestion that a non-professional could be capable of fitting these suspension products. These kits are not a DIY item and any advice given could be considered (legally) as giving acceptance of it being a product for amateur/DIY installation, which it most certainly is not. Any suspension kits should only be installed by a competent professional service as they are a `safety critical item.