Air and Fuel› Superchargers, Turbochargers and Components

UPP

C5 Twin Turbo Kit

$6,899.99

SKU: UPP-C5

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Special Order
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$100 Minimum Order
30 Days Return
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Overview

The Under Pressure Performance UPP C5 Twin Turbo Kit is designed for 1997-2004 C5 Corvettes. It features full T304 stainless steel up-pipes. At 8 PSI, this system made 550WHP on a stock LS1 and over 600WHP on a stock LS6 Z06.
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The Under Pressure Performance UPP C5 Twin Turbo Kit is engineered for the 1997-2004 C5 Corvette, including both Base and Z06 models. This kit boasts full T304 stainless steel up-pipes, ready to connect directly to stock or aftermarket shorty manifolds. It has demonstrated significant power gains, achieving 550WHP at 8 PSI on a stock LS1 engine and exceeding 600WHP on a stock LS6 Z06. Unlike competitor offerings, the UPP system does not include a generic tune, emphasizing customizability for individual power goals. The kit can be further tailored with a variety of turbo options to meet specific power level requirements, and even offers full-framed T4 capability. The system achieves full boost by 3200 RPM, providing a better power curve, greater torque, and more direct power to the wheels compared to centrifugal superchargers. UPP offers 'a la carte' options for intercooler piping and other components if you already possess certain parts. The turbos are backed by a 2-year warranty, while the hot and cold side plumbing comes with a lifetime guarantee. A complete kit requires additional components such as chosen turbochargers, wastegates, blow-off valve, fuel injectors, oil return pump, air filters, intercooler, plumbing, couplers, clamps, feed/return lines, installation hardware, a battery relocation kit, and vanity covers.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandUPP
Part NumberUPP-C5
CategoryAir and Fuel
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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