Keith Black Hypereutectic pistons are a great choice for high performance marine, drag race, circle track, street or towing application builds. The low expansion 390 alloy with 16 percent silicon allows for a tighter piston to wall running clearance.

Fully machined head and valve reliefs
Triple Spiral Lock Rings
CNC machined pin bores produce straight and accurately sized bores
Accumulator Groove aids with compression ring seal
Machined in Oil Returns
Diamond Finished Skirts
Mini Grooves to reduce scuffing and overheating
Wrist pins and spiral lock included
1/16 x 1/16 x 3/16 rings not included
Compression Ratio 55cc 10.3:1, 60cc 9.7:1, 64cc 9.2:1, 69cc 8.8:1
Advertised piston weight 461 grams, 143 gram wrist pin
OE Deck Height 8.206"
Note: Standard bore size is 4.000
Note: Centered Pin, 3.0" long. Spacer ring included. Made with Ford 302 block

CA Prop 65

Specifications

KEY SPECS
MFG. Part #	Select Size to see
Brand	Keith Black
Piston Style	Dish
Piston Material	Hypereutectic Aluminum
Wrist Pin Included	Yes
Wrist Pin Style	Press-Fit or Floating

GENERAL
Piston Diameter	Select Size to see
Piston Ring Style	C
Top Ring Thickness	1/16"
Second Ring Thickness	1/16"
Oil Ring Thickness	3/16"
GTIN Code	Select Size to see

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