4L60E / 4L65E GM Performance Transmission – 2-Piece Case (1998–2005)
Heavy-Duty Performance Build • 500–525 HP Rated
NO Torque Converter Included • 1-Year Warranty (Parts Only)
This Stage 2 4L60E / 4L65E Performance Transmission from Transmission Depot
is engineered for customers requiring substantially more strength than entry-level
or OEM+ builds—without stepping into extreme-duty or race-only pricing.
Rated for 500–525 horsepower, this build is ideal for performance street vehicles,
heavier trucks and SUVs, and increased torque applications where durability
and hydraulic control are critical.
This unit is sold without a torque converter and includes a
1-year parts-only warranty, making it a strong, budget-conscious
performance option.
All listed transmission components are brand new unless otherwise stated.
INTERNAL PERFORMANCE COMPONENTS
- Twisted™ HD Clutches & Steels – Increased clutch capacity and improved heat resistance for higher torque loads
- Reinforced 3–4 Clutch Pack – Upgraded apply capacity in the most common 4L60E/4L65E failure area
- Upgraded 3–4 Apply Piston – Improved apply force and durability under load
- Kevlar Heavy-Duty Intermediate Band – Increased holding power and durability
- 5-Pinion Rear Planetary Gearset – Improved torque distribution and load capacity
- Heavy-Duty Sprag Assembly – Improved reliability during aggressive shifts
- Hardened Heavy-Duty Sun Shell – Eliminates a common OEM failure point
- Complete OEM-Spec Bushing Replacement – Restores proper alignment, oil control, and hydraulic integrity
SERVO & APPLY SYSTEM UPGRADES
- Corvette / Oversized 2nd Apply Servo – Increased band apply force for improved 1–2 shift control and durability
- Updated Servo Pin & Apply Components – Corrects common wear and release issues
PUMP & VALVE BODY – MODIFIED & UPDATED
-
Pump – Modified & Updated
- Updated lubrication and pressure circuits
- 10-vane rotor assembly with hardened rings
- Teflon pump bushing
- All factory reliability updates applied
-
Valve Body – Performance Calibrated
- Performance-oriented hydraulic recalibration
- Firmer, more controlled shifts
- Improved shift timing and pressure control
- Reduced cross-leaks and excess heat buildup
HYDRAULIC & ELECTRONIC COMPONENTS
- .500"+ Boost Valve – Increases and stabilizes line pressure under load
- ALL NEW Internal Electronics, including:
- New EPC solenoid
- New shift solenoids
- New internal wiring harness
- New pressure control manifold / switches (where applicable)
SUPPORTING COMPONENTS
- Precision gasket and seal kit
- New transmission filter
- Final assembly inspection and air-check verification
APPLICATION NOTES
- GM vehicles equipped with 4L60E or 4L65E
- 1998–2005 models (2-Piece Case)
- Performance street vehicles
- Heavier trucks, SUVs, and increased torque applications
IMPORTANT WARRANTY NOTICE
This transmission includes a 1-Year Warranty (Parts Only).
Adding a torque converter does NOT extend or upgrade the warranty.
This listing remains a 1-year, no-converter, budget-focused performance build
regardless of add-on components.
Vehicles used for racing, severe abuse, or exceeding the
500–525 HP rating require a higher-capacity transmission.
[ITEMPRICE]