These purpose-made "big-bore" AE Hepolite 9cc pistons are ideal for adding displacement and torque to your A-series. Modern 3-ring design, dish-top, 1.4810" compression height; rings and pins included. We recommend using 1300 or A+ blocks for big-bore conversions. Sold per set of four.
See also C-STR310 (7cc), or C-STR312 (11cc) 73.5mm piston sets.