TH400 Competition Components

Use with engines producing up to 750 foot pounds of torque in vehicles weighing up to 4000 pounds. Input shaft is manufactured from proprietary steel billet material. Undercuts behind the splines are eliminated, resulting in increased spline length and diameter, increasing spline engagement at the clutch housing interface over 35%. Fully machined, shaped, and ground on precision CNC equipment. 

Use with engines producing up to 1000 foot pounds of torque in vehicles weighing up to 4000 pounds. Will handle more torque in lighter vehicles. Input shaft is manufactured from proprietary steel billet blanks. The OEM forward clutch housing is bored out and fitted with an oversize 40 spline input shaft, vastly increasing surface area at the interface, eliminating housing failures. Fully machined, shaped, and ground on precision CNC equipment. 

Use with engines producing up to 1250 foot pounds of torque in vehicles weighing up to 4000 pounds. Will handle more torque in lighter vehicles. Input shaft is manufactured 300M steel billet blanks. The OEM forward clutch housing is bored out and fitted with an oversize 40 spline input shaft, vastly increasing surface area at the interface, eliminating housing failures. Fully machined, splined, and ground on precision CNC equipment. 

A fully assembled and tested "drop in" direct clutch housing loaded with exclusive CK Performance products for competition applications with transbrake valve bodies behind engines producing up to 1200 hp and 750 lbs. ft. and weighing up to 3800 lbs.

Extreme duty oversize 36 element sprag assembly, fit to OEM TH400 direct clutch drum. Excellent choice for higher horsepower applications. Includes 5 friction intermediate clutch pack and pressure plate.

This custom drum assembly is fit with oversize tool steel inner  and outer sprag races, an oversize 36 element sprag assembly, and a custom sprag retaining plate and spiral lock ring. Modified inner race distributes lube oil to the sprag assembly more efficiently. This drum uses factory OEM clutches and steels. This drum has been tested behind engines producing over 2000 horsepower/1800 foot pounds torque. 

CK Performance Products has taken the performance and durability advantage of the early design intermediate clutch outer race one step further by offering a fully inspected, specially stress relieved and black oxide coated version of this factory performance part, making it an excellent choice for all high output GM TH400 applications.

New OEM intermediate sprag outer race retainer.

Do not trust your performance TH400 builds to the low quality manufacturing standards of offshore aftermarket components. This is the OEM Borg Warner Heavy Duty 34 Element Sprag Assembly with the quality, performance and durability the transmission industry has come to expect. Made in the U.S.A.

This Kolene processed pressure plate is a must for extreme duty TH400 applications. A thoroughly cleaned, inspected, and parallel decked OEM direct clutch pressure plate receives a proprietary nitrocarburized case hardening process, increasing its fatigue strength, wear resistance, and lubricity for a major improvement in component performance and durability.   

This Kolene processed component is a must for extreme duty TH400 applications. A thoroughly cleaned, inspected, and parallel decked OEM forward clutch pressure plate/direct clutch hub receives a proprietary nitrocarburized case hardening process, increasing its fatigue strength, wear resistance, and lubricity for a major improvement in component performance and durability. Eliminates wear at the splined interface between the direct clutch plates and direct clutch hub.   

This steel billet clutch hub is recommended for GM TH400 transmission applications behind engines producing up to 1000 horsepower/850 foot pounds of torque. The hub is fitted with a high capacity thrust bearing assembly that reduces internal friction, and stops direct clutch housing float which can result in clutch housing and center support wear as well as direct clutch failure. Installs with no other modifications.

This extreme duty clutch hub is manufactured from proprietary super alloy steel billet blanks for GM TH400 transmission applications behind engines producing up to 2000 horsepower/1800 foot pounds of torque. The hub is fitted with a high capacity thrust bearing assembly that reduces internal friction and stops direct clutch housing float which can result  in clutch housing and center support wear as well as direct clutch failure. Hub features 360 degree oiling to the forward clutch pack assembly due to additional lube oil holes. Installs with no other modifications.