FTI Performance Street Racer Lock-Up Torque Converter

2005–2014 Chrysler 300C, 2005–2008 Dodge Magnum, 2006–2020 Dodge Charger, 2008–2014 Dodge Challenger – 5.7L / 6.1L / 6.4L HEMI

Part #: SRT86391

Overview

The FTI Performance Street Racer Series Multi-Plate Lock-Up Torque Converter is engineered to enhance the driving experience for Chrysler and Dodge enthusiasts. Designed specifically for vehicles equipped with the 9.5" NAG1/722.6 automatic transmission, this torque converter features a 3800 RPM stall speed that balances quick launches with smooth street performance. It improves throttle response, power transfer, and overall transmission efficiency, making it an ideal upgrade for drivers seeking to maximize their vehicle’s potential without sacrificing reliability.

Compatible with a wide range of Chrysler 300C, Dodge Charger, Challenger, and Magnum models, this torque converter is built to withstand aggressive driving conditions while maintaining smooth lock-up engagement. Whether you’re a weekend warrior or a street performance enthusiast, the FTI Street Racer torque converter delivers consistent performance and durability.

Key Features

FTI Performance’s Street Racer torque converter incorporates advanced engineering and premium materials to ensure superior function and longevity. Key features include:

• 9.5-inch billet aluminum cover for increased strength and superior heat dissipation
• 3800 RPM stall speed optimized for street performance and quick launches
• Furnace brazed construction for enhanced durability and structural integrity
• TIG welded components providing precise, high-quality welds for long-lasting reliability
• Triple Torrington bearing support to reduce friction and improve rotational stability
• Multi-plate lock-up design for efficient power transfer and reduced slippage
• Specifically designed for the NAG1/722.6 9.5" automatic transmission
• Compatible with a wide range of factory and aftermarket modifications

Construction & Design

This torque converter features a robust billet aluminum cover that resists warping and cracking under high heat and stress conditions, ensuring long-term durability. The furnace brazing process creates a strong metallurgical bond between components, enhancing structural integrity during aggressive driving. Precision TIG welding adds strength to critical joints, while the triple Torrington bearing setup reduces wear and maintains smooth operation at high RPMs. These meticulous construction techniques result in a torque converter built to handle the demands of performance driving while maintaining consistent lock-up engagement for improved fuel efficiency and drivability.

Installation & Fitment

The FTI Street Racer Lock-Up Torque Converter is a direct-fit replacement for the 9.5" NAG1/722.6 automatic transmissions found in the following vehicles:

• 2005–2014 Chrysler 300C (including 300 C, 300 C Luxury, 300 C SRT8, 300 S, 300 SRT8)
• 2005–2008 Dodge Magnum R/T and SRT8
• 2006–2020 Dodge Charger Daytona R/T, Pursuit, R/T, SE, and SRT8
• 2008–2014 Dodge Challenger R/T and SRT8

Installation requires standard transmission service procedures and should be performed by a qualified technician. No major modifications are necessary, making it a straightforward upgrade for enthusiasts looking to improve transmission performance and throttle response.

What's Included

• FTI Performance 9.5" Billet Lock-Up Street Racer Torque Converter
• Multi-plate lock-up assembly
• Installation instructions

Ideal For

This torque converter is ideal for weekend warriors, street performance enthusiasts, and anyone seeking a reliable upgrade to improve throttle response, acceleration, and transmission efficiency in their Chrysler 300C, Dodge Charger, Challenger, or Magnum. It is well-suited for vehicles with mild to moderate power modifications and those looking to enhance the driving experience without compromising daily drivability.

FTI Performance builds racing-focused transmissions and torque converters for street/strip and dedicated drag applications. With converter options tuned for different power levels and use cases, FTI is a staple in builds where consistent launches, efficient power transfer, and drivetrain durability are non-negotiable.