UPP 08-09 G8 GXP/GT Twin Turbo Kit

In stock

The 08-09 G8 GXP/GT Twin Turbo Kit features T304 stainless steel schedule 10 tubular manifolds. On a stock LS3, this system clocked in at 650WHP on pump gas! 

UPP's variety of turbo options have your back for virtually any power level you want. Choose from our drop-down list, or build the kit around what's on the shelf in your garage. We even offer full-framed T4 capability with this kit!

Our turbochargers are backed by a 2 YEAR WARRANTY. Hot and cold side plumbing come with an incredible LIFETIME guarantee.

More Efficient 

Why choose turbos over a supercharger? We achieved FULL BOOST by 3000 RPM-- far sooner than a centrifugal supercharger system. This results in a better power curve, greater torque, and more power straight to the wheels!


Our twin turbo kits are custom tailored to fit your specific needs. Already have your turbos? Just need intercooler piping? We now offer "a la carte" options for all turbo systems so you end up with just the parts you need to get your vehicle up to speed!

Video Installation Instructions Here!



Our GXP kit is engineered to help you stand out! Our top mount, "in your face" design is sure to turn heads each and every time you pop your hood.


Unlike our competitors, our twin turbo setup doesn't come with a "cookie cutter" tune. We understand that everyone has individual goals, and that those goals may change, so we made our system fully customizable. UPP believes that every system should be individually tuned based on your specific needs. You hold the power to make this system as mild or wild as you desire!

Ceramic Coating

All of our turbo kits are offered with optional ceramic coating! We use a two-part process, featuring flow coating inside all pre-turbo piping. This 15mm thick coating drops thermal transfer by as much as 60%! All of the exhaust components then receive external ceramic coats, which provide an additional layer of protection, as well as a sleek & stylish matte black finish.

Service & Support

The only thing more outstanding than our performance parts is our customer service team! Our turbos come with a 2 YEAR WARRANTY, and we offer an outstanding lifetime warranty on manifolds and piping. We have someone waiting by the phone Monday through Friday, from 9AM to 6PM MST to answer sales, support, and warranty questions. You can even contact us by email for 24/7/365 service.


    • 2x Stainless Steel Tubular Manifolds

    • Turbochargers of your choice

    • 2x Down-pipes

    • 2x Intakes w/ Filters

    • 2x 7PSI TurboSmart 40mm Wastegates

    • TurboSmart Race Port BOV

    • 8x FIC Fuel Injectors (from 60 to 190 lb/hr)

    • Front Mount Air-to-Air Intercooler

    • Intercooler Piping

    • 3-Ply Silicone Couplers

    • Stainless Steel T-Bolt Clamps

    • Stainless Steel Oil Feed &Return Lines w/AN Fittings

    • Spark Plug Wires

    • Coil Pack Relocation Kit

    • Radiator Vanity Cover

    • ABS Relocation Kit

    • All Necessary Hardware and Fittings

Please select from ALL drop-down lists to build a COMPLETE kit!

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