Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(No Bottle)

Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(No Bottle)

Marsoni

M251S

$1379.99

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

Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(No Bottle)Flow Up To 400 HP Dual Stage Billet Aluminum Nitrous Spacer Plate 400+HP Solenoids E85 Compatible With Different Jetting All Hardware, Electrical, Brackets, Gasket, and Jetting Included Includes Jetting for 50 100 150 200 250 300 HP Flow Up To 400HP. This dual stage spacer plate system comes out of the box with everything you need to spray up to 300 HP, but can spray up to 400HP with additional jetting. This system can easily be converted to a dual

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Nice product, very simple in reality. All screws together. Shelves are probably 12inches high - higher than I wanted so I won't be using it after all - but that is my fault for not realizing how vertically spaced the shelves would be. The unit takes up a lot of vertical wall space. My only dislike (hence the -1 rating) is the large stamped letters on every wall mounting plate. The letters don't appear to mean anything, and are very large and upraised - to me they detract from the overall appearance of the unit. The letters are not possible to get rid of without a grinder or significant file-work and repainting everything (not worth the significant effort that would entail).

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Reviewed in the United States on October 25, 2025