2006 - 2008 GM Duramax Shift Kit (1604721)
- Installation recommendation: Experienced technician
- Includes our exclusive Smart Trim/Clutch Control valve assemblies and items to modify the C2 clutch piston for increased capacity and more durability. The C2 clutch is the weakest part of the early 5 Speed Allison
- Addresses goes to neutral under load; 3-4 slip; burned C2/C3 clutches; sticks in one gear; won't move after extended parking; loss of pump prime; smart clutch control valves for increased durability; SHORT-CRISP-SMOOTH-upshifts & kickdowns
- Handles 500 Street Horsepower
Refer to Manufacturer's Warranty
Most orders are shipped 1-2 weekdays after an order is placed, depending on availability. Some products are shipped directly from manufacturers.
Not all products are stocked in house. Please check for availability as some products may be backordered.