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Metal pipes and components arranged symmetrically on a workstation.
Various metal automotive parts arranged on a workbench.
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Cordes Performance Racing Twin Turbo Kit – 2020+ C8 Corvette Stingray with install.

$5,000.00

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Description

Cordes Performance Racing Twin Turbo Kit – 2020+ C8 Corvette Stingray

The ultimate twin turbo solution for the C8 platform is here—engineered by racers, built for real performance. At Cordes Performance Racing, we’ve been shipping C8 turbo builds across the country and delivering results—many of which are laying down 900+ WHP, these systems have been used in daily drivers and cars that race at the drag strip, 1/2 mile, or street.

This kit is a no-compromise system, designed to support everything from stock engine builds to full forged bottom ends with upgraded clutches. At the heart of this system are twin Xona XRA5564S ball bearing turbos, capable of lightning-fast spool and impressive top-end performance, thanks to their 73 lb/min flow rating—each.

Combined with our fully billet air-to-water intercooler and twin Garrett 750HP cores, this system is built to handle 1400+ WHP while delivering unparalleled throttle response and drivability.

Highlights & Features

 Twin Xona Rotor XRA5564S Turbos

  • Ultra-quick spool—400 RPM faster than comparable Precision turbos.

  • High-flow, durable design backed by real-world abuse testing.

  • Proven reliability—survived extreme oil starvation stress testing on our TT Viper build.

 Billet Air-to-Water Intercooler

  • Full billet construction: top, bottom, and sides.

  • Twin Garrett 750 cores with internal air straighteners before the MAF for stable, smooth airflow.

  • ORB ports support standard or 1″ AN lines for big power builds running auxiliary ice tanks.

 High-Performance Heat Exchanger

  • Uses an OEM GM radiator for high availability and easy install.

  • Optional CNC billet upgrade for 1″ lines (coupe models only).

  • Drops right into the factory mount/fan pocket for a plug-and-play fitment.

 Dedicated Intercooler Pump System

  • Year-specific, bolt-in solution.

  • Includes everything needed—no improvising or extra brackets required.

 Seamless Compatibility

  • Bolts to OEM catalytic converters or our GESI high-flow cat pipes.

Real-World Performance

We believe in transparency. No inflated dyno numbers or fantasy marketing

  • On 91 octane, our in-house C8 made 631 WHP / 572 WTQ (stock baseline: 439 WHP / 417 WTQ) on a drag radial.

  • Other customer cars have ranged from 610–630 WHP on similar setups.

  • Pump gas and octane quality (91 vs. 93) will make a real difference—expect ~15–20 WHP variation.

Honesty matters: If someone claims 700 WHP on pump gas with stock fuel—you’re being misled. There are a many places that will try and oversell something, we refuse to do anything of the sorts.

Installation & Availability

Currently, this system is available as an in-house install only. We are actively working on detailed installation documentation to expand availability through our dealer network. Until then, we personally install every kit to ensure exact fitment, proper tuning, and complete quality control.

Ready to Build Your C8 the Right Way?

Contact us today to schedule your installation or to ask about dealer inquiries.

 Joe Cordes – joe@cordesperformanceracing.com

Pricing & Package Overview
Final installed pricing varies depending on year, mileage, coupe or HTC configuration, and whether the vehicle is stock or modified. Most installations typically fall in the mid-$20,000 range, fully installed, tuned, and ready to drive.

Our package includes everything required for a complete, professional installation:

  • PCM unlock via HP Tuners

  • 8 credits to license the tuning cable to your PCM

  • Full vehicle calibration and tuning

  • CPR Twin Turbo Kit installation

  • LS9 MAP sensor

  • Set of 8 NGK 6510 spark plugs

  • All required fluids and installation materials

Optional Upgrades
For maximum performance and reliability, customers can add:

  • High-flow catalytic converters

  • Catch can system

  • Clutch pressure box (not required for stock clutches with turbos)

  • Upgraded axles

  • Additional supporting modifications

Deposits & Scheduling
The listed price represents an initial deposit to begin the process.

  • This deposit is 100% refundable until your build is scheduled.

  • Once scheduled, the deposit becomes non-refundable and will be applied toward the final invoice.

  • Within 24 hours of placing the deposit, our team will contact you to verify ID, discuss project details, and provide a personalized quote.

  • After consultation and scheduling, an additional $5,000 deposit will be required, bringing the total initial deposit to $10,000.

  • If optional upgrades are selected, deposit amounts may be adjusted accordingly.

We take the time to ensure every customer feels fully informed and confident before moving forward. From first call to final delivery, our goal is to provide a seamless, professional experience and a Corvette that performs at the highest level.