Edge 85500-261 Evolution CTS4 2020-2023 L5P Duramax with Locksmith

**Pre-Order Only: Now accepting preorders. Estimated ship date: November 3, 2026**

Upgrade your 2020–2023 Chevy/GMC 6.6L L5P Duramax with the Edge 85500-261 Evolution CTS4 with Locksmith.

This package combines in-vehicle ECM/TCM unlocking, preloaded diesel performance calibrations, 10-speed transmission tuning, and next-generation CTS4 monitoring in one device.

Choose from four performance levels with gains up to +125 HP / +275 lb-ft, while monitoring DPF activity, EGT, boost, transmission temperatures, and other supported vehicle data through customizable digital gauges.

Performance Levels:
- Economy: +50 HP / +100 lb-ft
- Towing: +75 HP / +160 lb-ft
- Performance: +90 HP / +180 lb-ft
- Extreme: +125 HP / +275 lb-ft

Features & Benefits:
- Edge Evolution CTS4 platform
- Includes Locksmith ECM/TCM unlock
- In-vehicle unlocking — no module removal required
- 10-speed transmission tuning included
- Up to +125 HP / +275 lb-ft
- Adjustable Throttle Boost
- Optimized transmission shift strategies
- Manual DPF regeneration where supported
- Monitor DPF soot level, regen activity, EGT, boost & temperatures
- 26–38" tire size calibration
- Speedometer correction
- Adjustable speed and rev limiters
- Adjustable idle-up from 600–1,800 RPM
- Allison transmission relearn
- Remembers supported Tow/Haul, exhaust brake & drive mode settings
- Customizable digital gauges
- Data logging and alerts
- Read and clear supported DTCs
- Wi-Fi updateable
- Compatible with optional EAS sensors and cameras

Vehicle Fitment:
2020–2023 Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax Diesel
2020–2023 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax Diesel

Important Notes:
- A Windows PC and Edge Update Agent are required to complete the tuning process
- Device can unlock and tune one vehicle only
- Once VIN lock and ECM/TCM unlock are completed, the device is non-returnable
- Vehicle can be returned to the factory calibration, but the unlock process cannot be reversed
- Performance gains and supported features may vary by vehicle

Part Information:
Brand: Edge Products
Product: Evolution CTS4 w/ Locksmith
Part #: 85500-261
UPC: 850058611860
Application: 2020–2023 L5P Duramax
Performance Tunes: Yes
10-Speed Transmission Tuning: Yes
ECM/TCM Unlock: Yes
Wi-Fi Updates: Yes
Data Logging: Yes
Video Capable: Yes

Emissions Notice: **NOT LEGAL FOR SALE OR USE IN CALIFORNIA**
This product is legal under the provisions of the EPA Tampering Policy dated November 23, 2020, for states accepting those provisions. California CARB testing is currently pending. If an Executive Order is issued, Edge may update the product's emissions status.