UNDER CONSTRUCTION Here's what Pacbrake has to say about their Ford exhaust brake: Get up to 250 RHP, the maximum allowable retarding horsepower for the safest high performance braking available. Pacbrake's superior DirectMount® design bolts on easily with no engine modifications and our exlusive warm-up feature saves wear on your engine. Pacbrake - a valuable add-on that's going to save wear on your service brakes and protect you from brake fade. Whether you're empty or loaded you need a Pacbrake Exhaust brake. The industry leader in exhaust retarder technology since 1987 and the choice of 90% of all exhaust brake owners in North America.