The awesome Tein Street Advance Z4 is a top-quality shock absorber that allows your vehicle's ride height to be raised by 1 inch. Ride height is modified by moving the lower springs seat up or down. The Z4 integrates a twin-tube system that produces a long stroke with less repulsive force for excellent high ride comfort. They have ample stroke to function smoothly so you can adapt effortlessly when facing gaps and bumps on rough roads while guaranteeing an easy and stable ride quality.

These coilovers also feature Tein's patented Hydraulic Bumper Stopper which places a huge emphasis on resilience and driving comfort even when you're vehicle is fully-loaded or driving across off-road environments. The H.B.S. blueprint internally converts the impact of the stroke to thermal energy and absorbs it thereby greatly decreasing vehicle behavior disturbances caused by repulsive forces. The H.B.S. mechanism is specifically optimized per vehicle model, with the appropriate activation point and damping force emphasized.

The Street Advance Z4 Coilovers offer a 16-level damping force modification for the simultaneous adjustment of compression and rebound. This lets drivers adjust their ride quality according to their preference and ensure a comfortable experience. Certifying reliable durability and a great look that lasts, the Tein Street Advance Z4 Coilovers are finished with the corrosion-resistant Tein Green Powder-Coating along with the Unique Special Surface Treatment ZT Coating.

Tein Inc. is renowned for manufacturing top-quality suspension systems and products for better vehicle drivability be it on the street or track. Established in 1985 at Tsurumi-Ku Yokohama, Japan, Tein has continuously evolved to become a highly regarded name in the automotive industry. Their journey began with the development of superb OEM shock absorbers before moving on to manufacture their own brand products in 1990. The venture resulted in the birth of their first system, the Type H Damper. Later in 2001, they expanded to the United States and one year later, their business units were ISO9001 certified.

Also known as Technical Innovation, Tein integrates the most innovative of modern technologies to give today's drivers, the most reliable and cost-efficient aftermarket suspensions and components. The company has established facilities all over the globe, from their home base in Yokohama, Japan to Milton Keynes in the United Kingdom to West Downey, California in the United States. Tein places great emphasis on precision as they develop their coilovers based on the region they are selling to, certifying the ideal solution for different needs. Before being released, Tein Products go through harsh quality testing like a comprehensive inspection using the latest CAD system and tensile/compression tests. Prioritizing both performance and comfort, Tein is definitely a constantly reliable brand when it comes to getting the best driving experience.