BD’s exchange valve bodies are modified, tuned and
tested to provide optimum performance in towing and performance applications.
The end result is improved shift quality, increased clutch holding capacity,
reduced wear and extended transmission life.

Modified, tuned and tested to provide optimum performance
Revised valve design
Larger oil ports
Proprietary governor piston dimensions
Hand-lapped surfaces prevent internal leakage
New trim valves increase mainline pressure
Improved shift quality
Increased clutch holding capacity
Reduced friction and extends transmission life
Free shipping for returning core! (details included with product)