The Only Exhaust
Brake Tough Enough for Your Ram!
Increase your driving confidence and towing safety with the
superior retarding performance of the BD Brake for í89-í06 5.9
liter Cummins engines. Using BDís exclusive Variable Orifice
Technology, BDís turbo-mount design bolts in place of the
factory elbow between the turbo and the exhaust system,
providing peak retarding power throughout the engineís rpm
rangeónot just at high rpm like other brands.
Designed for years of reliable operation, the BD Brakeís rugged
cast-iron housing incorporates BDís
AlumiBronze bushing and piston ring-sealed, stainless steel
butterfly shaft that has proven to stand up under the harsh,
high-heat conditions of the exhaust environment. Actuated by an
air cylinder (newer models) or a powerful, three-inch vacuum
cylinder (earlier models), the offset butterfly valve wonít
stick, and has been strategically placed in the elbow so that it
wonít impede exhaust flow when in the open position. The BD
brake incorporates a threaded port for mounting an EGT probe, as
well as a 1/4-inch stainless steel port that can be used to
monitor the brakeís retarding performance.
"Looking for a brake that will fit a future diesel, or have a
modified or twin-turbo application?" BDís remote-mount or
vacuum-actuated four-inch kits are an effective solution.
Controlled by a lighted On/Off toggle switch for automatic
transmissions, or stick-mounted rocker switch for manual
transmissions, the BD brake communicates with the engineís
electronic idle verification board for quick engagement. The
durable air compressor included in later model kits can even be
used for other applicationsóitís that tough.
Automatic-equipped trucks require BDís programmable Tow Loc and
Pressure Loc kits to electronically control torque converter
clutch engagement. This addition effectively reduces slippage,
resulting in peak retarding performance as well as lower
All BD Brake kits come complete with the brake, air compressor
(where applicable), mounting hardware and complete instructions.
Turbo mounted brakes bolt in place of the existing exhaust
outlet casting where it is clamped to the turbo outlet and