GSC P-D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit (10500RPM/55PSI Max)

GSC P-D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit (10500RPM/55PSI Max)

Marsoni

M251S

$397.38

Get it in 3 business days with 1 day shipping. Friday, May 29

GSC P-D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit (10500RPM/55PSI Max)SKU: 5084 GSC P D Nissan VR30DDTT HP Conical Valve Spring Ti Retainer & Seat Kit 2016+ Infiniti Q50 Q60 Nissan Z (10500RPM 55PSI Max) GSC Power Division HP Conical Valve Spring and Titanium Retainer Seat Kit upgrades Nissan VR30DDTT twin turbo V6 engines in Infiniti Q50 Q60 and Nissan Z models. This complete 24 valve kit handles 10500 RPM limits and 55 PSI maximum boost with 195 lbs seat pressure at 1. 900 inch installed height. It reduces valvetrain

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So the quality of this not great, but good enough and they look nice enough on the wall. However, the bracket holes are not spaced at 16" intervals. WTF? I'm not sure who designed this thing. The molly plugs that came with it look OK, but to play it safe I used a cobalt steel drill bit and made my own holes in the bracket. Easy enough with some wd40. My other pick with this is that the screws to anchor the shelf to the bracket are black and and very obvious... they should have supplied some kind of cap.

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Reviewed in the United States on January 31, 2026