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The GSC Power Division shimless conical valve spring kit with titanium retainers is specified for the Nissan RB26DETT and carries a maximum boost pressure rating of 50 psi. The listing identifies the kit's shimless conical spring design and Ti retainers for RB26DETT applications, with the 50 psi max-boost specification included in the product description.
GSC P-D Nissan RB26DETT Shimless Conical Valve Spring & Ti Retainer Kit ( Max Boost PSI 50)
