If you're looking to boost your small displacement engine, the Garrett GT28RS, also known as the GT2860RS, is a solid choice. With a .63 A/R and a T31 "narrow" v-band turbine housing, this turbocharger is designed for performance enthusiasts who want quick spool-up without sacrificing power. It’s perfect for engines up to 2.2L, making it a favorite among tuners and racers alike.
One of the standout features of the GT28RS is its dual ball bearing setup. This isn’t just marketing jargon; it really does make a difference in how quickly the turbo responds. You can expect it to hit boost faster than many other turbos in its class, which is crucial when you’re trying to squeeze every bit of performance out of your setup. With a flow capacity of around 350HP, it’s got the chops to keep you in the game, whether you’re hitting the track or just enjoying a spirited drive on the weekend.
Now, let’s talk specs. The compressor wheel has an exducer size of 60 mm and a trim of 62, while the turbine wheel measures 53.85 mm with a trim of 76. These numbers aren’t just for show; they play a significant role in how efficiently the turbo operates and how well it performs under load.
When it comes to installation, you’ll want to make sure you have the right fittings and components. For coolant, you’ll need two 14mm fittings and lines, and for oil feed, a -4 AN with a built-in restrictor is recommended (check out product code ATP-OIL-021). Don't forget the oil drain flange (ATP-FLA-010) and gasket (GRT-GSK-008) to keep everything sealed up tight.
If you’re going the stainless route, grab the T3 inlet weld flange (ATP-FLS-038), or if you prefer mild steel, there's ATP-FLS-001. And for the turbine inlet gasket, you’ll want GRT-GSK-005. To wrap it up, the V-band "T31" narrow outlet flange for your downpipe (ATP-FLS-099) and the outlet clamp (CLC-CLA-012) will ensure everything fits snugly.
Overall, the Garrett GT28RS is a turbo that delivers real-world performance, and if you’re serious about your ride, it’s definitely worth considering. It’s built for those who want to push their small engines to the limit while enjoying a responsive driving experience.
⚠ 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.