Tein is a well-known name when it comes to spring and coilover damper kit. Tein products are made in Japan with high-grade material for performance and quality.

Most Tein H Tech spring sets feature rubber spring protector tube to dampen noise level. Tein H Tech springs are first coated with zinc phosphate, a rust-proof material. The H Tech springs are then finished with a long-lasting gold powder paint. In addition, each Tein H Tech spring is made using a new material called Vanadium (SAE9254V), a strong, lightweight material that retain more spring stroke for optimal quality.

Tein spring manufacturing is a multi-step process involving: 1. Cold-coiling to create the spring 2. Low temperature tempering treatment to eliminate residual stress 3. End-face grinding according to the form of each car application 4. Double shot peening to the spring surface to increase spring life 5. Setting at elevated temperature to minimize loss of spring load 6. Coating treatment to prevent rust.

Each Tein H Tech lowering spring set comes with 4 springs, 2 for the front and 2 for the rear. Each Tein H Tech lowering spring set comes with a 1 year limited warranty.

Product Summary: - Tein H Tech spring made from new strong, lightweight Vanadium material for optimal quality. - Tein H Tech spring combines a balance between styling and comfortable ride. - Tein H Tech spring comes with rubber spring protector tube to reduce noise. - Tein H Tech spring made with high quality powder coating and painting treatment to prevent rusting. - Tein H Tech spring made in Japan. - Tein 1 year limited warranty.

Reference: Tein H Tech spring, Tein High Tech spring, Tein Guarantee Spec spring, Tein Guarantee Spec Luxury Master, Tein lowering spring.