Description
Icon FHR GM LS 4.010 Bore 4.000 Stroke -3.3cc Flat Forged Piston Set IC9991C.010
Formed Head Relief pistons have valve reliefs that are formed in as the piston blank is pressed into the die. Many of the domed models are solid which allows tailoring the dome height for a specific compression ratio.
Features:
- 4032 Alloy
- 0.30″ Offset wrist pins
- M42 Skirt Coating
- 15 Degree Valve Angle
- Flat Top 2V
- Round Wire Locks
- 2nd Land Accumulator Grooves






