Icon FHR Pistons IC9975-STD Fits SB Chrysler 340 Flat Top 7cc Bore 4.040

Icon's FHR (Formed Head Relief) pistons deliver quality on a budget. FHR pistons have valve reliefs that are formed into the piston as the forging blank is pressed into the die. Many of the FHR dome pistons feature a solid dome. This gives engine builders the flexibility to machine the dome to their desired compression ratio. FHR pistons are 11% silicon which means they can be installed with tighter piston to wall clearance. In addition, the use of 4032 aluminum decreases the friction created during engine operation, this results in extended piston life and reduced wear

Skirts machined by UEM's unique in house built cnc machines

Die formed relief valves

Accumulator groove to help eliminate flutter and maximize ring seal

Wrist pins and spiral lock included

1/16 x 1/16 x 3/16 rings not included

Compression Ratio 58cc 10.6:1, 65cc 9.8:1, 68cc 9.4:1

Advertised piston weight 606 grams, 118 gram wrist pin

OE Deck Height 9.599"

Note: Standard bore size is 4.040

Note: Offset Pin. No mini grooves on top land