ICON FHR Series Piston Set

Fits: Mopar Big Block RB

Eng. Disp. In. 440

Eng. Disp Liters 7.2

Year Range 1966-1979

Bore (in) 4.32

Bore (mm) 109.7

Stroke (in) 3.75

Stroke (mm) 95.3

Oversized Yes

Ring Pack 1/16, 1/16, 3/16

Top Land .260

Pin Number 1.094x3000

Pin Type Press or Floating

Pin Diameter (in) 1.094

Pin Diameter (mm) 27.8

Lock PRF116

Compression Height IN 2.067

Compression Height MM 52.5

Crown (cc) +4.5cc

Alloy 2618

Compression Ratio 75-11.2, 78-10.9, 88-9.9

ICON premium forged pistons are made from high-strength, heat-treated T-6 2618 primary aluminum alloy. They feature a diamond-machined skirt, head, mini-grooves, pin bore, gas accumulator, ring grooves, and pressure-drilled pin hole oiling. The pistons have a V-rib design for light weight, strength, and maximum piston cooling. Compare weight, performance, design, and cost—and you will win with ICON!