Up Rated Valve Springs Set

The Toda Racing Up Rated Valve Springs Set is engineered to enhance the performance of B16A, B16B, and B18C engines. These springs utilize a remodeled natural frequency and improved valve spring material, featuring a progressive pitch coil design. This redesign allows for safe valve lifts of up to 12.5mm, providing a significant upgrade over stock components. This comprehensive set includes all necessary springs for a complete engine upgrade. The product is designed for a wide range of Honda models, including the Civic EF9, EG6, EG9, EK4, Ferio EK4, Type-R EK9; CR-X EF8, delSol EG2; and Integra DA6, DA8, DB8, and DC2. It is crucial to verify specific engine codes (B16A, B16B, B18C) and model years within the provided compatibility list, as fitment is primarily for JDM cars and RHDJapan does not guarantee fitment outside of this context. Note that the use of OEM valve springs is not recommended with these upgraded springs. For optimal performance and compatibility, especially when paired with camshafts like the Toda Racing High Power Profile EX Camshaft Type C2, it is advised that a programmable ECU may be required. Always conduct thorough personal research to confirm compatibility with your specific vehicle setup before purchase.