Check the listing for details. Supertech 73lb Valve Spring Ti Retainers For Honda Civic D15B7 D16A6 Non VTEC. Condition: New. Listed at 249.99 USD. In stock and Ready to Ship. Supertech Performance Single Valve Spring and TRC Titanium Retainer Kit fits Honda Civic D15B1, D15B7, D16A6 Non VTEC Engines - 73lb SPRK-H1003S - Supertech Single Valve Springs - 73 lb Seat Pressure Outer Spring - 23.70mm OD - 16.30mm ID 73 lb Seat Pressure @ 40.60mm 13.30mm Max Net Lift 27.30mm Coil Bind 9.90 lbs/mm Rate Will Fit Honda Civic D15B1, D15B7, D16A6 - Non VTEC SOHC Engines. Complete set of 16 Single Valve Springs, 16 TRC Titanium Retainer's This Kit DOES NOT INCLUDE THE 8 EXHAUST SEATS - YOU MUST USE THIS SUPERTECH PART NUMBER ( SEAT-H1003E) Supertech Performance Single Valve Springs are made with premium Super Clean Chrome Silicon Vanadium Steel alloy for higher performance and durability at high rpms and better memory. Computer designed to ensure that wire stress levels do not overpass the limits of stress defined in the diagrams of fatigue for long durability under extreme conditions. Computer software also allows us to make sure that the harmonics are well under control. Titanium Retainers are manufactured with high quality military certified Titanium alloy, CNC machined for tight that will ensure long term durability. Supertech Performance is best known for high performance valves, and valvetrain components. With over 30 years of experience Supertech performance has been providing the racing market with first class parts for every type of racing application. Whether it is Drag Racing, IRL, Rally, Road Racing or any other motorsport for that matter, Supertech Performance has the perfect performance solution for your application.