DriftMax BMW E36 Knuckle Adapter for E46 / E8X / E9X Sleeve Mounted Coilovers Specifications These front knuckle adapters enable BMW E46 E8X and E9X sleeve coilovers to be fitted to BMW E36 knuckles. Thanks to this conversion these coilovers can be installed on your vehicle without the slightest modification to easily fit our DriftMax lock kits. DriftMax suspension components are made from high-quality steel and undergo stringent testing. They have been tested in competition to ensure they stand up to any test and are distinguished by their extremely long service life.