ARIAS A3310404 Pistons B Series 81.5mm Flat Top

Arias Pistons PN A3310404 are associated with three different applications depending on what combination of block and head you choose to combine as listed below: B18/B20 With B16A Head: 10.0:1 B18/B20 With B18C Head: 10.2:1 B16A with B16A Head: 9.1:1 B16A with B18C Head: 9.2:1 Pin Size: 21mm Bore: 81.5mm Rings are included with the Piston Set ARIAS pistons are rated at 650+ hp. but here at Golden Eagle, we believe in overbuilding. If you plan on hitting 600+ hp. we would highly recommend the upgraded pin option.  Part Numbers: G.E PN: A3310404 PISTONS STD PIN PN: 827-2250-20CP1C HD PIN PN: 827-2250-20CP3C