Icon Pistons IC689-040 Fits BB Chrysler 431 489 Flat Top 4.5cc Bore 4.290

Fits BB Chrysler 431 489, Bore 4.290, fits 3.750 Stroke with 6.760 Rod, fits 4.250 Stroke with 6.535 Rod, 560 grams, Dish 12cc, Set of 8 Pistons

Special Price $809.66 Regular Price $834.70

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⚠ PROP 65 WARNING

⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.

Description

Icon Forged Pistons are forged from high ductile 2618 alloy. With a 1% silicon content 2618 alloy they are formulated and heat treated for the most demanding performance applications such as very high compression ratios, boosted application and nitrous

Crown and valve reliefs are cnc machined

Top land mini groove technology

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

Accumulator groove to help eliminate flutter and maximize ring seal

Skirt and pin boss struts designed to withstand heavy loads from high cylinder pressures

Wrist pins and spiral lock rings included

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

Compression Ratio 431 - 75cc 10.1:1, 80cc 9.7:1, 88cc 9.1:1 / 489 - 75cc 11.4:1, 80cc 10.9:1, 88cc 10.1:1

Advertised piston weight 560 grams, 158 gram wrist pin

OE Deck Height 9.980"

Note: Standard bore size is 4.250"

Notes: Anodized crown and top ring groove. Boosted and nitrous applications. Centered pin

Note: Ships direct from manufacturer

Specifications

More Information
CNC Part Number	UEM-IC689-040
Price	$834.70
Manufacturer's Part Number	IC689-040
Brands	Icon
Part Types	Engine Piston
Departments	Parts
Vehicle Make	Chrysler BB
Bore Size	4.290
Crankshaft Stroke	3.750, 4.250
Rod Length	6.535, 6.760
Piston Type	Flat Top
Compression Height	1.318
Piston Material	2618 Forged
Piston Ring Size	1/16 1/16 3/16
Wrist Pin Size	0.990
Custom Notices	⚠ PROP 65 WARNING

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