If you’re looking for a turbo that packs a punch without taking up too much space, the Garrett G-Series G25-550 is a solid choice. This little beast is designed for those who want to squeeze out every bit of performance from their setup, and it does so while being surprisingly compact. We’re talking about a turbo that can deliver up to 550 horsepower—pretty impressive for a small frame, right?
What really sets this turbo apart is its ultra high flow G-Series compressor wheel. This isn’t just a fancy term; it means you’re getting a compressor that can move a serious amount of air, which is crucial for performance. Plus, the turbine wheel is made from a high-heat resistance Mar-M Alloy that can handle temperatures up to 1050 degrees Celsius. That’s some serious durability you can count on, especially if you’re pushing your engine to its limits.
Installation is straightforward, too. The G25-550 comes with a stainless steel T25 inlet and a V-band outlet, which makes it easier to hook up to your existing setup. You’ll also find an internal wastegate with a .49 A/R turbine housing, so you can manage boost levels without any hassle. The oil feed fitting is a -4AN, and it includes -6AN coolant fittings to keep everything running smoothly.
Now, let’s get into some of the nitty-gritty specs. The compressor wheel has an inducer size of 48mm and an exducer size of 60mm, with a trim of 65. The compressor housing inlet is a solid 3 inches in diameter, while the outlet measures 2 inches. On the turbine side, you’re looking at a 54mm inducer and a 49mm exducer, with a trim of 84. The turbine housing inlet and outlet are both V-band types, measuring 3 inches and 3.55 inches respectively.
For those who want to get everything just right, there are some additional components you might need. The T25 inlet flange and gasket are handy for the turbo manifold, and you’ll want the V-band flange for your downpipe. Don’t forget about the oil drain flange and gasket, as well as the fasteners to keep everything tight. If you’re looking to monitor boost pressure or speed, there are fittings and sensor kits available too.
In short, if you’re serious about performance and want a turbo that can deliver without taking up too much real estate, the Garrett G25-550 is worth considering. It’s got the specs, the durability, and the ease of installation to make it a great choice for anyone looking to upgrade their ride.
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Advanced Tuning Products, Inc. (ATP Turbo) is a company that is solely dedicated to turbocharging. Its main goal is to engineer and manufacture quality turbocharging components that deliver a real difference in power gains. Currently located in Hayward, California, ATP Turbo offers an extensive lineup of innovative turbo components, all of which are backed by years of experience and a solid international reputation. The brand’s current lineup includes a wide range of blow-off valves, injectors, adapters, and several other turbo components that are engineered to bring about a significant boost in power.
Dedication to Quality and ReliabilityWhile that act of turbocharging itself is not “new”, many of the parts ATP Turbo creates are born from “fresh” ideas that arise from applying the basic principles of process improvement and re-engineering to turbo systems. Following these philosophies has helped ATP Turbo design and re-design turbocharging components that are reliable, better functioning, and, oftentimes, more simplified than their stock counterparts. ATP products can be purchased as separate components or as a complete kit. For those taking on a larger tuning project, an ATP Turbo kit is certainly the better choice as it has everything you need to get the job done efficiently.
ATP Turbo’s processes rely on the latest equipment and tools to build only the best products in a timely fashion. All of its products are built using the latest high-precision equipment like 4-axis Haas CNC milling stations and lathes. With this, the company is able to switch from prototypes to high-speed production in very little time. What’s more, they are manufactured from high-quality materials to ensure superior durability for longevity and reliability.
ATP’s turbocharging components complement the best turbochargers offered by the aftermarket industry. Garrett Engine Boosting Systems is known for its unsurpassed performance and reliability. Garrett turbo units provide the solid foundation for ATP’s turbocharging applications.
Upgrade to ATP Turbo at Vivid RacingIf you are looking for the finest turbo equipment on the market, then you’ve come to the right place. ATP Turbo manufacturer top-of-the-line turbochargers and turbo components to improve upon the already impressive performance figures of vehicles like the Ford Focus ST, Ford Fiesta ST, Subaru WRX, Mitsubishi EVO, and Hyundai Genesis. ATP produces and tests all of its own products to ensure that each part offers the consumer optimal performance gains.
If you are ready to release the potential of your ride, call our parts specialist today at (480) 966-3040. We will get you equipped with ATP Turbo and make the purchase process a simple and pleasant one.