Description
Tremec TKX TCET17765 Transmission Overview
The Tremec TKX Manual Transmission TCET17765 is part of the Tremec TKX Manual Transmissions product line and is designed for performance builders who need a compact, strong, and refined 5-speed manual transmission.
This model is listed under Manufacturer’s Part Number TCET17765 and Summit Racing Part Number REM-TCET17765. It is sold individually and includes the shifter, but it does not include the bellhousing or yoke.
The transmission uses a 1.125-inch input shaft diameter, 26-spline input shaft, and 31-spline output shaft. These shaft details are important because the clutch disc, yoke, driveshaft, and installation hardware must be selected to match the transmission.
With a listed 600 lb-ft torque capacity, the Tremec TKX TCET17765 is suitable for high-performance street vehicles, classic muscle cars, restomod builds, pro-touring projects, manual-swap conversions, and other performance applications where strength and drivability both matter.
The compact end-loaded case design helps improve tunnel clearance in many compatible vehicles, reducing the need for major floor modifications in many builds.
Vehicle Fitment and Common Applications
The Tremec TKX TCET17765 is designed for select GM and Ford applications, depending on bellhousing selection, clutch setup, driveshaft length, yoke choice, shifter position, transmission mount, and tunnel clearance.
The general product notes state that TKX transmissions can bolt to a standard GM Muncie bellhousing or be used with a compatible QuickTime bellhousing. Buyers should confirm the correct bellhousing and installation setup before ordering.
Fitment should be verified by checking the vehicle platform, engine, bellhousing pattern, clutch disc spline count, flywheel, pilot bearing, transmission mount, crossmember position, driveshaft length, output yoke, shifter location, tunnel clearance, reverse-light wiring, cruise-control safety wiring, and intended torque level.
This Tremec TKX 5-speed manual transmission is commonly selected for classic GM upgrades, Ford performance projects, muscle cars, street performance vehicles, restomod conversions, street/strip builds, and pro-touring cars that need a strong manual transmission with overdrive.
Because this unit uses a 26-spline input shaft, buyers need a compatible 26-spline clutch disc. Because the output shaft is 31-spline, the correct matching yoke must also be selected.
5-Speed Performance and Deep Overdrive Value
The Tremec TKX Manual Transmission TCET17765 gives performance builders a strong 5-speed manual transmission with a useful balance of launch gearing, mid-range pull, and deep overdrive cruising.
The gear ratios are:
| Gear | Ratio |
|---|---|
| First Gear | 2.87:1 |
| Second Gear | 1.89:1 |
| Third Gear | 1.28:1 |
| Fourth Gear | 1.00:1 |
| Fifth Gear | 0.68:1 |
The 2.87 first gear ratio supports strong acceleration in compatible performance builds, while the 0.68 fifth gear provides a deeper overdrive than many other 5-speed options. This can help lower cruising RPM in highway driving when matched with the correct rear axle ratio and tire size.
This ratio set is especially useful for buyers who want strong low-speed drivability and a more relaxed overdrive gear for street cruising, road trips, restomod builds, and performance cars that see regular highway use.
The TKX platform is also designed to support engine speeds up to 8,000 rpm with shifts at up to 7,500 rpm, making it suitable for serious performance combinations when matched with the correct clutch, driveline, and vehicle setup.
Torque Capacity and Internal Strength
The Tremec TKX TCET17765 is rated for 600 lb-ft of torque, giving it strong capability for many high-performance street, restomod, and pro-touring builds.
The TKX transmission uses a 3-piece aluminum housing, including the main case, intermediate plate, and rear extension. This design supports structural stiffness while keeping the transmission lighter than heavier cast-iron alternatives.
All gears and shafts are made from special-grade steel ASTM 4615, supporting increased torque-carrying capability. The transmission also uses wide gear widths to help increase gear life and torque handling.
All gears are supported by caged needle bearings, helping reduce gear end play and support smoother operation. The internal 3-rail shift system and steel shift components add durability and shift precision.
For buyers replacing an older 4-speed, worn 5-speed, or weaker manual transmission, the Tremec TKX 5-speed provides a modern upgrade path with stronger internals, better shifting, and overdrive drivability.
Shift Quality and Synchronizer Design
One of the strongest advantages of the Tremec TKX Manual Transmission is its shift quality.
The TKX uses multi-cone synchronizers and hybrid synchronizer rings made from sintered bronze and carbon. This design supports improved shift performance, especially during higher-RPM driving and performance use.
The transmission includes a high-performance short-throw billet aluminum shifter. This shifter is designed to isolate road noise while delivering clean, crisp gear engagement.
The supplied product details also note that the TKX is engineered to minimize noise, vibration, and harshness through gear layout and controlled internal stress management.
For drivers who want a more modern manual-transmission feel in a classic or performance vehicle, the Tremec TKX TCET17765 offers a refined shift experience with the strength needed for serious street performance.
Case Design and Installation Advantages
The Tremec TKX TCET17765 uses a compact, end-loaded design to improve transmission tunnel clearance in many applications. This is especially helpful in classic vehicles where transmission tunnel space can be limited.
The transmission is designed with three shifter locations, improving flexibility for different chassis layouts, consoles, seats, and driver positions.
Its aluminum case helps reduce weight while maintaining strength. The 3-piece housing design provides structural stiffness and supports durability under performance use.
Gaskets at all flanges help simplify installation and support fluid sealing. The transmission also includes a built-in reverse light switch and cruise control safety provisions.
Because fitment varies by vehicle, buyers should still verify tunnel clearance, shifter position, crossmember location, mount setup, driveshaft length, and yoke compatibility before purchase.
Included and Not Included Components
The Tremec TKX Manual Transmission TCET17765 is sold individually and includes the shifter.
The bellhousing is not included, and the yoke is not included. Buyers should plan for the correct bellhousing, clutch disc, flywheel, pilot bearing, hydraulic or mechanical clutch linkage components, transmission mount, crossmember, driveshaft, yoke, wiring, fluid, and installation hardware.
Because the input shaft is 26-spline, the clutch disc must be compatible with a 26-spline input. Because the output shaft is 31-spline, the correct matching yoke must be selected separately.
The transmission is listed as not remanufactured, meaning it is a new performance transmission rather than a rebuilt used unit.
Key Benefits for Performance Builders
The Tremec TKX TCET17765 gives performance builders a modern 5-speed manual transmission with strong torque capacity, compact fitment, and refined shift quality.
The first major benefit is strength. With 600 lb-ft torque capacity, wide gears, special-grade steel components, caged needle bearings, and a stiff aluminum case, the TKX is built for serious performance use.
The second benefit is highway drivability. The 0.68 fifth gear overdrive can help reduce cruising RPM, making the vehicle more comfortable for longer drives when paired with the right rear gear and tire size.
The third benefit is shift quality. The short-throw billet aluminum shifter, multi-cone synchronizers, and hybrid synchronizer rings support crisp, low-effort gear changes.
The fourth benefit is fitment flexibility. The compact case, multiple shifter locations, and GM/Ford application support make the TKX a strong option for restomod, muscle car, street performance, and pro-touring builds.
Who This Transmission Is Best For
The Tremec TKX Manual Transmission TCET17765 is best for builders who need a strong 5-speed manual transmission for compatible GM or Ford performance applications.
It is suitable for classic muscle cars, restomod builds, pro-touring cars, high-performance street vehicles, manual swap projects, and drivers upgrading from older 4-speed or worn 5-speed transmissions.
This product is a strong choice for buyers who need 600 lb-ft torque capacity, a 26-spline input, 31-spline output, 2.87 first gear, 0.68 overdrive fifth gear, compact transmission tunnel fitment, and an included short-throw shifter.
It is not intended for buyers who need a complete conversion kit with bellhousing, yoke, clutch, flywheel, crossmember, mount, driveshaft, linkage, or fluid included. Those parts must be selected separately based on the vehicle.
Technical Details and Included Specifications
The Tremec TKX Manual Transmission TCET17765 is a 5-speed manual transmission built for select GM and Ford performance applications.
| Specification | Details |
| Product Type | Manual transmission |
| Brand | Tremec |
| Product Line | Tremec TKX Manual Transmissions |
| Manufacturer Part Number | TCET17765 |
| Summit Racing Part Number | REM-TCET17765 |
| Number of Gears | 5 |
| Torque Capacity | 600 lb-ft |
| Input Shaft Diameter | 1.125 in. |
| Input Spline Quantity | 26 |
| Output Shaft Spline Quantity | 31 |
| Bellhousing Included | No |
| Yoke Included | No |
| Shifter Included | Yes |
| First Gear Ratio | 2.87:1 |
| Second Gear Ratio | 1.89:1 |
| Third Gear Ratio | 1.28:1 |
| Fourth Gear Ratio | 1.00:1 |
| Fifth Gear Ratio | 0.68:1 |
| Case Material | Aluminum |
| Housing Design | 3-piece aluminum housing |
| Shifter Type | Short-throw billet aluminum shifter |
| Synchronizers | Multi-cone synchronizers |
| Synchronizer Rings | Hybrid sintered bronze and carbon |
| Shift System | Internal 3-rail shift system |
| Gear and Shaft Material | ASTM 4615 special-grade steel |
| Reverse Light Switch | Built in |
| Cruise Control Safety | Built in |
| Remanufactured | No |
| Quantity | Sold individually |
Fitment Support and Ordering Notes
Before ordering the Tremec TKX TCET17765, buyers should confirm vehicle fitment and supporting components. Important details include vehicle platform, bellhousing requirements, clutch disc spline count, flywheel, pilot bearing, input shaft diameter, output spline count, driveshaft length, yoke selection, shifter position, transmission mount, crossmember, tunnel clearance, reverse light wiring, cruise-control safety wiring, and intended torque level.
This transmission includes the shifter, but it does not include the bellhousing or yoke. Buyers should also confirm whether additional parts are needed, including clutch kit, pilot bearing, flywheel, hydraulic release bearing, mechanical linkage, transmission mount, crossmember, driveshaft, yoke, speedometer components, fluid, and hardware.
Customers can also compare this product with other Tremec TKX transmissions, Tremec 5-speed manual transmissions, GM manual transmission upgrades, Ford manual transmission upgrades, compatible bellhousings, clutch kits, flywheels, yokes, driveshaft components, mounts, and installation hardware when planning a complete build.
Frequently Asked Questions
What is the Tremec TKX TCET17765 designed for?
The Tremec TKX TCET17765 is designed for select GM and Ford performance applications that need a compact, strong, modern 5-speed manual transmission with overdrive and improved shift quality.
What torque capacity does this transmission have?
The Tremec TKX Manual Transmission TCET17765 is rated for 600 lb-ft of torque, making it suitable for many high-performance street, muscle car, restomod, and pro-touring applications.
Does this transmission include a shifter?
Yes. The shifter is included. The transmission comes with a high-performance short-throw billet aluminum shifter designed for crisp engagement and reduced road-noise transfer.
Does this Tremec TKX include a bellhousing or yoke?
No. The bellhousing is not included, and the yoke is not included. Buyers must choose compatible parts based on the vehicle, engine, clutch, and driveline setup.
What clutch disc does this transmission require?
This transmission uses a 26-spline input shaft, so it requires a compatible 26-spline clutch disc.
What are the gear ratios?
The gear ratios are 2.87 first, 1.89 second, 1.28 third, 1.00 fourth, and 0.68 fifth. The fifth gear provides a deep overdrive for lower cruising RPM.
Is this transmission remanufactured?
No. The supplied specification states Remanufactured: No. This is a Tremec TKX performance manual transmission sold individually.
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