


Nitrous Outlet GM EFI Single Nozzle System - Gas/E85 (5-55psi)(35-200HP)(No Bottle)
Marsoni
M251S
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Friday, May 29
Nitrous Outlet GM EFI Single Nozzle System - Gas/E85 (5-55psi)(35-200HP)(No Bottle)Flow Up To 250 HP 1 8 NPT Nozzle 400+HP Solenoids All Hardware, Electrical, and Jetting Included E85 Compatible With Different Jetting Includes Jetting for 35 50 75 100 150 200HP Race Proven. Nitrous Outlet systems are favored by professional and amateur racers alike because of their high quality construction, quality components, unrivaled fitment, and extreme performance. All components in this system are made from the highest quality materials
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4.6 ★★★★★
Based on 1903 reviews
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Product Reviews
★★★★★ 5
makes it easy to pour into and wdt your portafilter without making a mess
Color: Black, Size: 51mm
Did you know there are 2 different types of dosing funnels, one with a inner collar/lip and one with an outer one?
the normcore dosing funnel has an outer collar/lip, which means it secures to the outside of the portafilter basket, keeping it lined up. i didn't realize when i bought it, but the advantages to the outer lip is that there is no space or gap when the dosing funnel is removed (the inner lip takes up space along the edge of the basket, leaving a ring of space without coffee grounds). having the lip on the outside means, when you're done with your wdt, you don't have to do anything else besides tamp.
at first, i was getting grounds all over the place when i was tamping because the grounds would push out to the sides as i was pushing down. i realized that the tamp (normcore v4 tamper) fit perfectly in the dosing funnel, so before i removed the funnel, i would lightly tamp with the tamper, giving me a little more space to place the tamper without worrying about grounds going all over the place.
the magnets on this dosing funnel work pretty well, although, depending on your basket, it may work better than others. when magnetically attaching the funnel to different baskets, flipping the funnel upside down and shaking, holding the basket, the dosing funnel held pretty securely to the pressurized baskets that came w/ my delonghi, as well as the basket that came with my bottomless portafilter. the ims precision competition basket however, doesn't hold as securely.
i thought at first it was because the lip of the basket was too big, but it turns out it's the same size as everything else. it turns out that while most of the top of the basket is flat, the inner edge is raised, maybe to help keep grounds from coming out. that raised bump on the top of the basket, is taller than the other baskets, so the metal that is to come in contact with the magnet is further away compared to the other baskets. still, it holds it securely enough while using it normally, so i won't be doing any modifications to the ims basket.
the normcore also flares out at the top, making it wider. this helps with wdt-ing, allowing to work at more angles compared to the straight walled versions. it also makes pouring your grounds into the basket easier.
although a little more expensive compared to other dosing funnels, i am very satisfied with how it makes it easy to wdt and tamp without making a mess. there was a little learning curve/trial and error to find the best way to use it, but i figured it out on day 2.
would definitely consider buying another if i get a different machine with a different portafilter size
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Reviewed in the United States on July 21, 2024
★★★★★ 5
Good Upgrade over steel or plastic nice height
Color: Black, Size: 58mm
Pretty good quality. Not a perfectly aligned fit ( interior circle mostly matches up ) Be aware if you have a Stainless Steel portafilter like my premium ECM Synchronika's it will be a weak magnetic fit. Adequate, but not firm by any means. Quite the flare in this collar but the height is good. Much lighter than Steel, more durable than plastic. Half the price of a colored plastic collar with much weaker magnets.
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Reviewed in the United States on April 4, 2026
★★★★★ 4
High quality and fits well, I just wish the magnets were a little stronger
Color: White, Size: 51mm
It looks modern and stylish. The funnel fits my 51mm portafilter very well and does stay put if you're careful inverting it. It's solidly built and feels durable. It greatly helps keep the countertop tidy and allows me to use a large dose before tamping. The one improvement I would ask for is slightly stronger magnets that would hold more securely when I invert it. I tried to place it over the cup of grounds, and the funnel slipped off when I flipped them back over. It kinda works, you just have to be super careful. Better to just pour the grounds into it.
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Excellent Funnel
Color: Black, Size: 58mm
Material is high quality. Magnets are strong. Funnel opening is wide. Angle of descent to the portafilter is perfect. Stays on the portafilter very strongly. I am extremely happy with this dosing funnel.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Great for Breville 54mm baskets!
Size: 53.3mm
Well made and a great design. After having tried another big brand distributor that didn’t work well for me, I found this one that works perfectly with Breville 54mm double walled baskets. It offers a minimal adjustment I was needing to evenly distribute without hard pressing before the tamp.
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Reviewed in the United States on January 18, 2026
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