If you're looking to crank up the power on your build, the Garrett G-Series G45-1125 turbocharger is a solid choice. With a 67mm compressor inducer diameter, this beast can handle up to 1125 horsepower—yeah, you read that right. Whether you've got a 2.0-liter engine or something pushing up to 8.0 liters, this turbo's got you covered.
One of the standout features is its quick spool time. You won't be waiting around for boost; it kicks in fast, making it a great option for drag racers and those looking to dominate on the street. The G Series compressor aero is no joke either—it boosts flow by about 24% compared to the GTX4508R. That means more power and better performance when you need it most.
Now, if you're into the specifics, the turbine wheel has an 89mm inducer that flows up to 56 lbs/min. It's also made from Inconel, which is a fancy way of saying it can take the heat and keep on performing. The turbine housing is lightweight aluminum, which helps keep things nimble. Plus, it comes with stainless steel turbine housings in a T4 divided inlet, so you know it’s built to last.
On the tech side, this turbo features dual ceramic ball bearings with steel cages, which means smoother operation and less friction. You’ve got fully machined speed sensor and pressure ports, along with water fittings included in the super core—everything you need to get it set up right.
Here are some specs for the gearheads out there:
If you're planning on installing this turbo, make sure you've got the right fittings and flanges. You'll need a couple of coolant options—14mm coolant fittings and lines are a must. For oil, you’ll want the -4 AN feed flange with a built-in restrictor and the appropriate gaskets. There's a whole list of compatible components to help you get everything sorted.
For those who like to dig deeper, you can check out the Instruction Manual for all the nitty-gritty details. Trust me, this turbo is a game-changer if you're serious about performance.
⚠ 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.
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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.