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The GSC Power Division Extreme shimless conical valve spring kit with titanium retainers is specified for the Nissan RB26DETT and is rated for a maximum boost pressure of 90 psi. The kit pairs GSC's shimless conical springs with Ti retainers, presented as an extreme-level valve train component for RB26DETT engines where the 90 psi max-boost rating is part of the product callout.
GSC P-D Nissan RB26DETT Extreme Shimless Conical Valve Spring & Ti Retainer Kit (Max Boost PSI 90)
