364cade9_Duramax_LLY_LBZ__SpeedBrakeâ____BD
[FEATURE] Maximum Braking [BANKS SPEEDBRAKE] Vane control + trans. shifting+ torque converter clutch control slowed vehicle to 15 MPH! [PACBRAKE] Only slowed vehicle to 68 MPH on 6% grade [BD] 
Only slowed vehicle to 69 MPH on 6% grade
Banks Power | 06-07 Chevy/GMC - 6.6L Duramax LLY-LBZ>>SpeedBrakeâ¢
BD