10R140 Stage 2 Tow Maxx Transmission

Built to Work Harder. Engineered to Hold More Power. Designed to Last.

The TDP 10R140 Tow Maxx Transmission is engineered for 6.7L Power Stroke owners who demand more from their trucks. Whether you're towing heavy equipment, hauling substantial loads, or running increased horsepower, the Tow Maxx is designed to deliver exceptional durability, improved clutch holding capacity, and consistent shift performance without sacrificing everyday drivability.

The factory Ford 10R140 TorqShift transmission is a capable platform, but increased torque, heavy towing, and demanding operating conditions can expose weaknesses in its clutch assemblies, hydraulic control system, and torque converter.

At Thompson Diesel Performance, we address these limitations with a combination of premium performance components, upgraded hydraulic controls, and precision assembly practices. Featuring our upgraded CDF drum, TDP Pro Shift Valve Body, Raybestos GPZ performance clutches, Goerend torque converter, and a brand-new OEM Ford transmission cooler, the Tow Maxx is built to provide the strength and reliability your Power Stroke deserves.

Key Features & Upgrades

• Upgraded CDF Drum Assembly – Designed to address known weaknesses associated with the factory CDF drum, improving clutch circuit integrity and long-term reliability.

• TDP Pro Shift Valve Body – Built from a brand-new genuine OEM Ford valve body and enhanced with proprietary hydraulic improvements to increase pressure stability, improve shift consistency, and promote dependable clutch application.

• Raybestos GPZ Performance Clutch Kit – Premium high-performance friction materials engineered for increased torque capacity, improved heat resistance, and exceptional durability under demanding conditions.

• Goerend Performance Torque Converter – Heavy-duty torque converter designed to provide dependable torque transfer, improved durability, and reliable lockup performance in high-load applications.

• Brand-New OEM Ford Transmission Cooler – Every Tow Maxx includes a new genuine Ford transmission cooler to help prevent contamination from a previously failed transmission and protect your investment.

• Precision Assembly & Inspection – Critical components are inspected, measured, and assembled to ensure proper operation and consistent performance.

Upgraded CDF Drum — Addressing a Critical Factory Weakness

The CDF drum assembly is one of the most important components within the 10R140 transmission. Maintaining proper hydraulic sealing and clutch application is essential for reliable operation, especially in trucks subjected to increased torque and demanding workloads.

Our upgraded CDF drum is designed to address weaknesses in the factory assembly, helping maintain hydraulic circuit integrity and consistent clutch engagement.

By improving this critical area, the Tow Maxx is better equipped to withstand demanding operating conditions while reducing the risk of clutch damage associated with hydraulic pressure loss.

TDP Pro Shift Valve Body — Precision Hydraulic Control

Every Tow Maxx transmission features our TDP 10R140 Pro Shift Valve Body, built using a brand-new genuine OEM Ford valve body as its foundation.

Unlike a standard remanufactured valve body, our Pro Shift assembly incorporates targeted hydraulic modifications designed to improve pressure regulation, reduce internal leakage, and enhance shift consistency.

These improvements help provide more predictable clutch application and positive shift performance while retaining the refined driving characteristics of Ford's 10-speed automatic transmission.

Raybestos GPZ Clutches — Built for Increased Torque

Clutch holding capacity is critical in any performance transmission, especially in heavy-duty diesel applications where tremendous torque is produced at low engine speeds.

The Tow Maxx features Raybestos GPZ performance friction clutches, designed to withstand increased torque demands and elevated operating temperatures.

These premium friction materials provide improved durability and clutch holding performance compared with conventional replacement friction materials, making them an excellent choice for trucks that tow, haul, and operate under increased power levels.

Goerend Torque Converter — Heavy-Duty Power Transfer

A transmission is only as dependable as the torque converter transferring power into it.

That's why the Tow Maxx features a Goerend performance torque converter, engineered for demanding diesel applications.

Designed with heavy-duty construction and performance-oriented internal components, the Goerend converter provides reliable torque transfer and lockup performance while maintaining the drivability needed for everyday use.

Whether you're pulling a loaded trailer or accelerating under increased engine torque, the converter is a critical part of the Tow Maxx package.

Brand-New OEM Ford Transmission Cooler — Protecting Your Investment

One of the most overlooked aspects of transmission replacement is the cooling system.

When a transmission fails, metal particles, clutch material, and other debris can become trapped within the factory cooler. Reusing a contaminated cooler can introduce damaging material into a newly built transmission.

Every TDP Tow Maxx transmission includes a brand-new genuine OEM Ford transmission cooler.

This ensures the transmission can be installed with a clean cooler rather than relying on a previously contaminated component, helping protect the valve body, torque converter, and internal clutch assemblies from debris-related damage.

Heavy-Duty Strength Without Sacrificing Drivability

The TDP Tow Maxx isn't designed to be an unnecessarily harsh-shifting race transmission. It's engineered to provide the strength and hydraulic performance required for demanding applications while retaining the smooth, predictable operation expected from a modern Ford Super Duty.

Whether your truck is a daily driver, dedicated tow rig, or modified Power Stroke, the Tow Maxx combines carefully selected performance components with the reliability-focused assembly practices that define Thompson Diesel Performance.

The TDP Difference

We don't believe a heavy-duty transmission should simply be a factory rebuild with a few upgraded parts.

Our Tow Maxx combines a strengthened CDF drum assembly, premium GPZ friction materials, our proprietary Pro Shift hydraulic upgrades, a Goerend performance torque converter, and a brand-new OEM Ford cooler into one comprehensive transmission package.

TDP 10R140 Tow Maxx — Built for the Load. Engineered for the Power. Ready for the Long Haul.