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Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(12lb Bottle)
Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(12lb Bottle)
Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(12lb Bottle)
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Nitrous Outlet GM Holley Hi-Ram Dual Stage Intake Spacer Plate System - Gas/E85 (5-55psi)(50-300HP)(12lb Bottle)

Marsoni M251S
Sale price$1881.49
Pay 4 payments of $470.37 a month.Shop Pay
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)(12lb 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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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 141 reviews
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Product Reviews
A
Verified Purchase
Alan Douglas Charles Cavanaugh II
Houston, US
★★★★★ 5
Must have over other filters.
Size: 2" x 10" x 11"
Amazing KN never fails for cabin filter works great in my 2021 Honda Civic hatchback sport touring.Must have for the 10th Gen Civic better air flow in car and cleaner smell easy to wash and reuse.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
M
Verified Purchase
Martha Brown
Whiting, US
★★★★★ 5
Quality
Size: 2" x 10" x 11"
My brother put me onto these filters. Super easy to install. Also bought engine filter. One time expense. A bit pricey but cost covered if you were still buying paper ones in about 3 changes of paper ones. Will definitely pay for themselves. Highly recommend
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
J
Verified Purchase
James G. Low
Charlottesville, US
★★★★★ 5
It works like a champ!!
Size: 2" x 10" x 11"
best darn filter made..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
M
Verified Purchase
mitchell
Chelsea, US
★★★★★ 5
Excellent Air Flow
Size: 2" x 10" x 11"
Maximum clean air flow and lifetime use. Best you can buy. Invest 💯
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
B
Verified Purchase
Bob F.
Belleville, US
★★★★★ 4
Does Not Fit
Size: 2" x 10" x 11"
This does not fit the 2024 Accord Sport Hybrid. It is approximately 1/4 inch too wide on each side (1/2 inch total), will not fit in the opening. Car was entered into the system and purchase page says this is correct and will fit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 22, 2026

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