ProCharger Stage II Intercooled Tuner Supercharger Kit with P-1SC-1 (2020-2026 Silverado / Sierra 2500 / 3500 6.6L) - 1KA404-SCI
Stage II Tuner Power for 2020-2026 Silverado and Sierra 6.6L HD Trucks
If you're building a serious performance truck, the ProCharger Stage II Intercooled Tuner Kit for 2020-2026 Silverado and Sierra 2500 / 3500 6.6L delivers the flexibility and power potential you need. This system is designed for enthusiasts who want to custom tune and push beyond standard limits, with up to 50-55% horsepower gains and the potential for 600+ crank horsepower on pump gas.
Whether you're towing, hauling, or building a high-performance HD truck, this kit provides massive torque gains, smooth power delivery, and scalable performance to match your setup.
Tuner Kit Flexibility - Built for Custom Performance
This tuner kit configuration includes all of the core supercharger hardware but leaves tuning and fueling up to you, giving you full control over your build.
- Designed for custom tuning and advanced performance builds
- Supports alternative fuels such as E85, race fuel, and methanol injection
- Ideal for upgraded engines with cams, headers, and exhaust systems
- Not emissions certified due to custom tuning capability
Stage II System - Maximum Capacity and Upgrade Potential
The Stage II system builds on the High Output platform with increased drive strength and intercooling capacity, making it ideal for higher horsepower goals.
- Dedicated 8-rib drive belt system
- 1500 HP air-to-air race intercooler
- Improved durability and airflow capacity
- Excellent foundation for future upgrades
Heavy-Duty Power Where It Counts
Designed for real-world truck use, this system delivers strong and usable performance gains without sacrificing drivability.
- 50-55% horsepower increase potential
- 600+ crank horsepower capability
- Increased torque for towing and hauling
- Smooth and predictable power delivery
- Optimized for modern heavy-duty transmissions
P-1SC-1 Supercharger - Proven and Upgradeable
At the center of the system is the P-1SC-1 centrifugal supercharger, delivering efficient airflow and long-term reliability. Its self-contained oiling system eliminates the need for external oil lines, simplifying installation and maintenance.
- P-1SC-1 head unit
- Optional helical gear set for quieter operation
- Upgradeable to P-1X, D-1SC, or D-1X head units
- Consistent boost performance under load
Race Intercooling for Consistent High Power
The included 1500 HP air-to-air race intercooler provides increased cooling capacity to maintain safe intake temperatures and consistent power output.
- High-capacity race intercooler for extreme applications
- Improved charge air cooling efficiency
- Supports sustained performance during towing and heavy use
- Helps reduce intake air temperatures and detonation risk
Performance Highlights
- 50-55% horsepower increase potential
- 600+ crank horsepower capability
- 7 psi of boost
- Stage II Intercooled Supercharger System hardware
- Designed for custom tuning and scalable power
Key Features
- P-1SC-1 centrifugal supercharger
- Dedicated 8-rib drive belt system
- 1500 HP air-to-air race intercooler
- Bullet blow-off valve included
- Self-contained oiling system - no external oil lines required
- Supercharger mounting location minimizes heat
- 100% reversible installation
- OEM-level fit, finish, and drivability
- Made in the USA
Available Options
- Black or polished supercharger and bracket finishes
- Helical gear set for reduced noise
- Head unit upgrades: P-1X, D-1SC, D-1X
Quick Specs
- Manufacturer: ProCharger
- Product Type: Stage II Intercooled Tuner Supercharger Kit
- Head Unit: P-1SC-1
- Engine: 6.6L V8
- Vehicle Fitment: Silverado / Sierra 2500HD / 3500HD
- Model Years: 2020, 2021, 2022, 2023, 2024, 2025, 2026
- Horsepower Gain: 50-55% (600+ crank HP potential)
- Boost Level: 7 psi
- Intercooler: 1500 HP air-to-air race intercooler
- Drive System: Dedicated 8-rib belt drive
- Tuning: Not included (tuner kit)
- Fuel Components: Not included
- Factory Intake Manifold: Retained
- Oiling System: Self-contained
- Warranty: 1-year standard, optional 3-year
- Part Number: 1KA404-SCI
FAQs
What makes this a Stage II tuner kit?
This system includes the Stage II upgrades such as the 8-rib drive system and 1500 HP intercooler, but does not include tuning or fuel components.
Who should choose this tuner kit?
This kit is ideal for builders planning custom tuning, upgraded engine components, and alternative fuel setups to maximize performance.
Fitment
- 2020 Chevrolet Silverado 2500HD 6.6L
- 2021 Chevrolet Silverado 2500HD 6.6L
- 2022 Chevrolet Silverado 2500HD 6.6L
- 2023 Chevrolet Silverado 2500HD 6.6L
- 2024 Chevrolet Silverado 2500HD 6.6L
- 2025 Chevrolet Silverado 2500HD 6.6L
- 2026 Chevrolet Silverado 2500HD 6.6L
- 2020 Chevrolet Silverado 3500HD 6.6L
- 2021 Chevrolet Silverado 3500HD 6.6L
- 2022 Chevrolet Silverado 3500HD 6.6L
- 2023 Chevrolet Silverado 3500HD 6.6L
- 2024 Chevrolet Silverado 3500HD 6.6L
- 2025 Chevrolet Silverado 3500HD 6.6L
- 2026 Chevrolet Silverado 3500HD 6.6L
- 2020 GMC Sierra 2500HD 6.6L
- 2021 GMC Sierra 2500HD 6.6L
- 2022 GMC Sierra 2500HD 6.6L
- 2023 GMC Sierra 2500HD 6.6L
- 2024 GMC Sierra 2500HD 6.6L
- 2025 GMC Sierra 2500HD 6.6L
- 2026 GMC Sierra 2500HD 6.6L
- 2020 GMC Sierra 3500HD 6.6L
- 2021 GMC Sierra 3500HD 6.6L
- 2022 GMC Sierra 3500HD 6.6L
- 2023 GMC Sierra 3500HD 6.6L
- 2024 GMC Sierra 3500HD 6.6L
- 2025 GMC Sierra 3500HD 6.6L
- 2026 GMC Sierra 3500HD 6.6L
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for ProCharger systems and heavy-duty truck performance upgrades. We help you build the right combination for your goals, whether you're towing, racing, or pushing your setup to the limit.
Our team understands what it takes to make reliable power in demanding HD applications.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
