Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.4 cc 30010BL This silver faceshield hardware pivot

This silver faceshield hardware pivot kit works with all PRO and VESTA Series Helmets as well as SFI 24

and heat treated high strength bolts from ARP

All day comfort

DEI's Black Seaming Tape is ideal for using with our Black Floor & Tunnel for edge and seam sealing

Voltage output is adjustable up to 22 volts at 15 psi of boost

Speed Pro Speed Pro Piston Forged 4.040" Bore 5/64 x 5/64 x 3/16" Ring Grooves - Minus 5.4 cc 30010BL This silver faceshield hardware pivotFully 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.