Banks Power Speedbrake with Idash 1.8 61432 For 2006-2007 GM 6.6L Duramax LLY/LBZ Banks Power Speedbrake with Idash 1.8 61432 For 2006-2007 GM 6.6L Duramax LLY/LBZ Automatically maintain downhill speed in your 2006-2007 GM 6.6L Duramax LLY/LBZ with the Banks Power 61432 SpeedBrake with iDash 1.8. The SpeedBrake lets you set... MSRP: Was: Now: $939.00 Add to Cart The item has been added