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Home Buy Transmission and Drivetrain Automatic Transmissions Gearstar GM 4L65E Level 4 Transmissions for GM LT4 GS4L65ELT4L4
ATS Diesel Performance Automatic Transmissions 309-815-4308-FSMF
ATS Diesel Performance Automatic Transmissions 309-815-4308-FSMF $3,335.00
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J.W. Performance Transmissions Automatic Transmissions PG92345R
J.W. Performance Transmissions Automatic Transmissions PG92345R $2,950.00

Gearstar GM 4L65E Level 4 Transmissions for GM LT4 GS4L65ELT4L4

$4,200.00

Automatic Transmission, up to 650 hp and 650 ft/lbs Torque, 4L65E, LT4 Bellhousing, 2,600-2,800 rpm Stall Converter, Chevy, Kit

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Category: Automatic Transmissions
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Description

Overview

Brand: Gearstar Performance Transmission
Manufacturer’s Part Number: GS4L65ELT4L4
Part Type: Automatic Transmissions
Product Line: Gearstar GM 4L65E Level 4 Transmissions for GM LT4
Summit Racing Part Number: GES-GS4L65ELT4L4
Number of Gears: 4
Bellhousing Bolt Pattern Manufacturer: Chevy
Transmission Shift Pattern: Standard
Valve Body Style: Automatic
Transmission Advertised Horsepower Rating: 650
Torque Converter Included: Yes
Flexplate Included: No
Transmission Controller Included: No
Wiring Harness Included: Yes
Transmission Cooler Included: Yes
Torque Converter Diameter (in.): 10.000 in.
Advertised Flash Stall Rating: 2,600-2,800 rpm
Trans-Brake Included: No
Lockup Compatible: Yes
Transmission Pan Style: Stock
Transmission Pan Material: Steel
First Gear Ratio (Automatic Transmissions): 3.06
Transmission Case Style: OEM
Transmission Case Material: Aluminum
Transmission Case Finish: Natural
Transmission Shield Built In: No
Flexplate Shield Built In: No
Fluid Fill Location: Case
Transmission Fluid Included: Yes
Dipstick Included: No
Remanufactured: Yes
Quantity: Sold individually.

Gearstar GM 4L65E Level 4 Transmissions for GM LT4

Gearstar GM 4L65E Level 4 transmissions for the GM LT4 engine are designed for strength and durability. Built with heavy-duty and upgraded components, these 4L65E transmissions are able to handle the torque from your custom build. All Gearstar transmissions are custom built by master technicians from start to finish and dyno tested with converter for the equivalent of 100 miles. They do this to ensure the transmission and converter package are in perfect operating condition before they leave the factory.

Features:

* Maximum 650 hp and 650 lb./ft. of torque
* Yank Performance custom billet lock-up compatible torque converter
* LT4 bellhousing
* Master overhaul kit with Alto hardened steels
* Raybestos Gen II racing frictions
* High-flow filter
* New 29 element dual cage sprag
* High-capacity upgraded pump assembly
* New hardened pump rings,13-vane pump rotor, and stator
* 0.500 updated boost valve
* Pressure regulator valve
* Transgo reprogramming shift kit with shift command
* Bushing kit
* New thrust washers and complete Torrington bearing kit
* Heavy-duty hardened sun shell
* Heavy-duty expanded capacity input drum with reinforcing sleeve
* High-rev spring kit
* Heavy-duty 5-pinion front and rear planetary gear set with sun gear
* Hardened output shaft and reaction shaft and hub
* Super hold 4th gear servo
* Corvette servo
* Wide carbon fiber 2-4 band
* New valve body spacer plate
* New shift solenoids, EPC solenoid, PWM solenoid, and 3/2 solenoid
* New manifold pressure switch
* New internal wiring harness and TCC solenoid
* New electronic speed sensor
* New Original Equipment transmission pan
* Transmission mount
* Also includes an external transmission cooler, bellhousing bolts, torque converter bolts, and all required fluid

Shipping & Delivery
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Effective Date: August 9, 2025

At X Factors Motorsports, we are committed to delivering your order quickly, securely, and affordably.


1. Processing Time

  • Orders are typically processed within 1–2 business days after payment is confirmed.

  • Orders placed on weekends or holidays will be processed on the next business day.


2. Delivery Times

  • Domestic Shipping (United States): Delivery takes 5–7 business days from the date of shipment.

  • International Shipping: Delivery times vary by destination and may take 7–21 business days depending on customs processing and local delivery services.


3. Shipping Rates

  • United States: Free standard shipping on all orders.

  • International: Shipping costs are calculated at checkout based on the delivery address, package weight, and destination country.


4. Carriers Used

We ship orders using trusted carriers such as UPS, FedEx, USPS, and DHL to ensure reliable delivery. Tracking numbers are provided for all shipments.

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    At X Factors Motorsports, we specialize in high-performance engines, outboards, and premium automotive equipment. With expert support, fast shipping, and trusted brands, we help builders, racers, and enthusiasts power their passion — one project at a time.

    • 1204 E Yorba Linda Blvd, Placentia, CA 92870, USA
    • Phone: +1 (714) 694-3374
    • E-mail: sales@xfactorsmotorsports.com
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