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GearStar GM 4L60E Level 4 Transmissions

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GearStar GM high-performance transmissions are built to meet the horsepower, torque, and rear gear ratio demands of the engines they will be matched to. Unlike othe
GearStar GM high-performance transmissions are built to meet the horsepower, torque, and rear gear ratio demands of the engines they will be matched to. Unlike other high-performance transmissions these models are hand-built by one technician from start to finish. Before a transmission and torque converter leaves the facility, they are dyno-tested for the equivalent of 100 miles, ensuring proper working conditions. GearStar GM 4L65E Level 4 transmissions and included torque converters are built with the highest-quality parts available to provide heart-pounding performance with industry-leading experience. Choose t
GearStar GM high-performance transmissions are built to meet the horsepower, torque, and rear gear ratio demands of the engines they will be matched to. Unlike other high-performance transmissions these models are hand-built by one technician from start to finish. Before a transmission and torque converter leaves the facility, they are dyno-tested for the equivalent of 100 miles, ensuring proper working conditions. GearStar GM 4L65E Level 4 transmissions and included torque converters are built with the highest-quality parts available to provide heart-pounding performance with industry-leading experience. Choose the Level 4 transmission best suited for your build and strap yourself into the experience of uncompromising performance with the legendary road-proven craftsmanship of GearStar Performance transmissions! More product features, items, and specifications may include: * Versions of up to 650 hp and up to 600 lbs.-ft. of torque at the crankshaft * Raybestos Stage 1 frictions and steels, high-energy wide bands * Two TransGo recalibration shift kits with Shift Command * OE-style filter and new internal wiring harness with new TCC solenoid * New shift solenoids, EPC solenoid, PWM solenoid, and 3/2 control solenoid * New manifold pressure switch, electronic speed sensor, and valve body spacer plate * Corvette servo and Super Hold 4th gear servo * New Torrington bearings * Bushing kit and thrust washer or thrust washer kit * Dual cage sprag (29-element) * High-capacity multi-vane pump assembly with new rotor (some with slide) * Hardened stator shaft, new vanes, and hardened rings * Updated boost valve * Pressure regulator valve * Extra-capacity, heavy-duty drum assembly * Heavy-duty 5-pinion steel planetary gear sets * Transmission pan

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Automatic Transmission, Up to 650 hp/600 ft. lbs, Max, Level 4, Two Piece Case, 4L60E, RWD, 2,800 - 3,000 Stall, LT Bellhousing, Chevrolet, Kit

Part Number: GES-GS4L60E2L4

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Automatic Transmission, Up to 650 hp/600 ft. lbs, Max, Level 4, One Piece Case, 4L60E, 4WD, 2,800 - 4,000 Stall, LT Bellhousing, Chevrolet, Kit

Part Number: GES-GS4L60E4X4L4

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Automatic Transmission, Up to 650 hp/600 ft. lbs, Max, Level 4, One Piece Case, 4L60E, RWD, 2,800 - 4,000 Stall, LT Bellhousing, Chevrolet, Kit

Part Number: GES-GS4L60EL4

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

Automatic Transmission, Up to 650 hp/600 ft. lbs, Level 4, Two Piece Case, 4L60E, 4WD, 2,000 - 2,400 Stall, LT Bellhouse, 13-Pin Connector, Chevy, Kit

Part Number: GES-GS4L60E24X44

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

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