Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.4 cc Micro / Mini Sprint Suspension BBK EXHAUST IS BUILT WITH

BBK EXHAUST IS BUILT WITH CNC MANDREL BENT 1-3/4 TUBING FOR 35% INCREASED FLOW OVER STOCK TO INCREASE HORSEPOWER

these are the only kits available for your vehicle

2005-2007 Workhorse LF72

but the slots in the center of the crossmember will need to be elongated in the forward direction

Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.4 cc Micro / Mini Sprint Suspension BBK EXHAUST IS BUILT WITHFully updated skirt profiles Exclusive DUROSHIELD skirt coating. DUROSHIELD provides scuff resistance, reduced bore clearances and enhanced ring sealing. SPEED PRO POWERFORGED pistons are built to stringent specifications with a precision CNC machined dome and skirts and microfinished ring grooves. The manufacturing process ensures that piston weights within a boxed set will not vary more than 4 grams and that skirt sizes are matched to within 0.